64556994 has 16 divisors (see below), whose sum is σ = 130299840. Its totient is φ = 21321360.

The previous prime is 64556981. The next prime is 64557029. The reversal of 64556994 is 49965546.

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, 48702 + ... + 50009.

It is an arithmetic number, because the mean of its divisors is an integer number (8143740).

Almost surely, 2^64556994 is an apocalyptic number.

64556994 is an abundant number, since it is smaller than the sum of its proper divisors (65742846).

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

64556994 is a wasteful number, since it uses less digits than its factorization.

64556994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98825.

The product of its digits is 1166400, while the sum is 48.

The square root of 64556994 is about 8034.7367100609. The cubic root of 64556994 is about 401.1570540046.

The spelling of 64556994 in words is "sixty-four million, five hundred fifty-six thousand, nine hundred ninety-four".