64732945 has 16 divisors (see below), whose sum is σ = 79212672. Its totient is φ = 50774400.

The previous prime is 64732937. The next prime is 64732951. The reversal of 64732945 is 54923746.

It is a happy number.

It is not a de Polignac number, because 64732945 - 2³ = 64732937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64732898 and 64732907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62149 + ... + 63181.

It is an arithmetic number, because the mean of its divisors is an integer number (4950792).

Almost surely, 2^64732945 is an apocalyptic number.

It is an amenable number.

64732945 is a deficient number, since it is larger than the sum of its proper divisors (14479727).

64732945 is a wasteful number, since it uses less digits than its factorization.

64732945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272.

The product of its digits is 181440, while the sum is 40.

The square root of 64732945 is about 8045.6786537868. The cubic root of 64732945 is about 401.5211764721.

The spelling of 64732945 in words is "sixty-four million, seven hundred thirty-two thousand, nine hundred forty-five".