557558664 has 64 divisors (see below), whose sum is σ = 1506267840. Its totient is φ = 170968320.

The previous prime is 557558647. The next prime is 557558681. The reversal of 557558664 is 466855755.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (557558647) and next prime (557558681).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92874 + ... + 98694.

It is an arithmetic number, because the mean of its divisors is an integer number (23535435).

Almost surely, 2^557558664 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 557558664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753133920).

557558664 is an abundant number, since it is smaller than the sum of its proper divisors (948709176).

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

557558664 is a wasteful number, since it uses less digits than its factorization.

557558664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150 (or 6146 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 51.

The square root of 557558664 is about 23612.6801528331. The cubic root of 557558664 is about 823.0575243984.

The spelling of 557558664 in words is "five hundred fifty-seven million, five hundred fifty-eight thousand, six hundred sixty-four".