557764688 has 20 divisors (see below), whose sum is σ = 1163797908. Its totient is φ = 257429760.

The previous prime is 557764687. The next prime is 557764693. The reversal of 557764688 is 886467755.

It can be written as a sum of positive squares in 2 ways, for example, as 90859024 + 466905664 = 9532^2 + 21608^2 .

It is a super-2 number, since 2×557764688² = 622202894359474688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557764687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340573 + ... + 1340988.

Almost surely, 2^557764688 is an apocalyptic number.

It is an amenable number.

557764688 is an abundant number, since it is smaller than the sum of its proper divisors (606033220).

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

557764688 is a wasteful number, since it uses less digits than its factorization.

557764688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681582 (or 2681576 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 56.

The square root of 557764688 is about 23617.0423211714. The cubic root of 557764688 is about 823.1588881548.

The spelling of 557764688 in words is "five hundred fifty-seven million, seven hundred sixty-four thousand, six hundred eighty-eight".