64774956 has 24 divisors (see below), whose sum is σ = 151280640. Its totient is φ = 21571792.

The previous prime is 64774939. The next prime is 64774967. The reversal of 64774956 is 65947746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17605 + ... + 20963.

It is an arithmetic number, because the mean of its divisors is an integer number (6303360).

Almost surely, 2^64774956 is an apocalyptic number.

It is an amenable number.

64774956 is an abundant number, since it is smaller than the sum of its proper divisors (86505684).

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

64774956 is a wasteful number, since it uses less digits than its factorization.

64774956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4973 (or 4971 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 64774956 is about 8048.2890107153. The cubic root of 64774956 is about 401.6080186941.

The spelling of 64774956 in words is "sixty-four million, seven hundred seventy-four thousand, nine hundred fifty-six".