64634056 has 8 divisors (see below), whose sum is σ = 121188870. Its totient is φ = 32317024.

The previous prime is 64634047. The next prime is 64634093. The reversal of 64634056 is 65043646.

It can be written as a sum of positive squares in only one way, i.e., 40525956 + 24108100 = 6366^2 + 4910^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×64634056² = 8355122390022272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4039621 + ... + 4039636.

Almost surely, 2^64634056 is an apocalyptic number.

It is an amenable number.

64634056 is a deficient number, since it is larger than the sum of its proper divisors (56554814).

64634056 is a wasteful number, since it uses less digits than its factorization.

64634056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8079263 (or 8079259 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 64634056 is about 8039.5308320822. The cubic root of 64634056 is about 401.3166115801.

The spelling of 64634056 in words is "sixty-four million, six hundred thirty-four thousand, fifty-six".