64766745 has 12 divisors (see below), whose sum is σ = 112262436. Its totient is φ = 34542240.

The previous prime is 64766731. The next prime is 64766749. The reversal of 64766745 is 54766746.

It is a happy number.

64766745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 46949904 + 17816841 = 6852^2 + 4221^2 .

It is not a de Polignac number, because 64766745 - 2¹³ = 64758553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1439261 = 64766745 / (6 + 4 + 7 + 6 + 6 + 7 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 64766745.

It is not an unprimeable number, because it can be changed into a prime (64766749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 719586 + ... + 719675.

It is an arithmetic number, because the mean of its divisors is an integer number (9355203).

Almost surely, 2^64766745 is an apocalyptic number.

It is an amenable number.

64766745 is a deficient number, since it is larger than the sum of its proper divisors (47495691).

64766745 is a wasteful number, since it uses less digits than its factorization.

64766745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439272 (or 1439269 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 64766745 is about 8047.7788861275. The cubic root of 64766745 is about 401.5910484379.

Subtracting from 64766745 its product of digits (846720), we obtain a square (63920025 = 7995²).

Subtracting from 64766745 its reverse (54766746), we obtain a palindrome (9999999).

The spelling of 64766745 in words is "sixty-four million, seven hundred sixty-six thousand, seven hundred forty-five".