557297664 has 416 divisors, whose sum is σ = 2013020160. Its totient is φ = 132710400.

The previous prime is 557297651. The next prime is 557297681. The reversal of 557297664 is 466792755.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17977329 + ... + 17977359.

Almost surely, 2^557297664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557297664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1006510080).

557297664 is an abundant number, since it is smaller than the sum of its proper divisors (1455722496).

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

557297664 is a wasteful number, since it uses less digits than its factorization.

557297664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 73 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 51.

The square root of 557297664 is about 23607.1528143485. The cubic root of 557297664 is about 822.9290766038.

The spelling of 557297664 in words is "five hundred fifty-seven million, two hundred ninety-seven thousand, six hundred sixty-four".