64576616 has 16 divisors (see below), whose sum is σ = 130395300. Its totient is φ = 29804544.

The previous prime is 64576609. The next prime is 64576643. The reversal of 64576616 is 61667546.

It can be written as a sum of positive squares in 2 ways, for example, as 60124516 + 4452100 = 7754^2 + 2110^2 .

It is a super-2 number, since 2×64576616² = 8340278668022912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310361 + ... + 310568.

Almost surely, 2^64576616 is an apocalyptic number.

It is an amenable number.

64576616 is an abundant number, since it is smaller than the sum of its proper divisors (65818684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64576616 is a wasteful number, since it uses less digits than its factorization.

64576616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620948 (or 620944 counting only the distinct ones).

The product of its digits is 181440, while the sum is 41.

The square root of 64576616 is about 8035.9576902818. The cubic root of 64576616 is about 401.1976935793.

The spelling of 64576616 in words is "sixty-four million, five hundred seventy-six thousand, six hundred sixteen".