64557012 has 24 divisors (see below), whose sum is σ = 162220576. Its totient is φ = 19863648.

The previous prime is 64556981. The next prime is 64557029. The reversal of 64557012 is 21075546.

It is a congruent number.

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, 206758 + ... + 207069.

Almost surely, 2^64557012 is an apocalyptic number.

It is an amenable number.

64557012 is an abundant number, since it is smaller than the sum of its proper divisors (97663564).

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

64557012 is a wasteful number, since it uses less digits than its factorization.

64557012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413847 (or 413845 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 64557012 is about 8034.7378301971. The cubic root of 64557012 is about 401.1570912886.

The spelling of 64557012 in words is "sixty-four million, five hundred fifty-seven thousand, twelve".