64275769 has 4 divisors (see below), whose sum is σ = 64707300. Its totient is φ = 63844240.

The previous prime is 64275767. The next prime is 64275773. The reversal of 64275769 is 96757246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8922169 + 55353600 = 2987^2 + 7440^2 .

It is a cyclic number.

It is not a de Polignac number, because 64275769 - 2¹ = 64275767 is a prime.

It is a super-2 number, since 2×64275769² = 8262748961082722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64275767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215542 + ... + 215839.

It is an arithmetic number, because the mean of its divisors is an integer number (16176825).

Almost surely, 2^64275769 is an apocalyptic number.

It is an amenable number.

64275769 is a deficient number, since it is larger than the sum of its proper divisors (431531).

64275769 is a wasteful number, since it uses less digits than its factorization.

64275769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431530.

The product of its digits is 635040, while the sum is 46.

The square root of 64275769 is about 8017.2170358548. The cubic root of 64275769 is about 400.5736955402.

The spelling of 64275769 in words is "sixty-four million, two hundred seventy-five thousand, seven hundred sixty-nine".