64615472 has 10 divisors (see below), whose sum is σ = 125192508. Its totient is φ = 32307728.

The previous prime is 64615471. The next prime is 64615477. The reversal of 64615472 is 27451646.

It is not an unprimeable number, because it can be changed into a prime (64615471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2019218 + ... + 2019249.

Almost surely, 2^64615472 is an apocalyptic number.

It is an amenable number.

64615472 is a deficient number, since it is larger than the sum of its proper divisors (60577036).

64615472 is a wasteful number, since it uses less digits than its factorization.

64615472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038475 (or 4038469 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 64615472 is about 8038.3749601521. The cubic root of 64615472 is about 401.2781448476.

The spelling of 64615472 in words is "sixty-four million, six hundred fifteen thousand, four hundred seventy-two".