557612691 has 16 divisors (see below), whose sum is σ = 763027584. Its totient is φ = 362021184.

The previous prime is 557612647. The next prime is 557612711. The reversal of 557612691 is 196216755.

It is not a de Polignac number, because 557612691 - 2¹⁰ = 557611667 is a prime.

It is a super-2 number, since 2×557612691² = 621863826328522962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557612611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38535 + ... + 50991.

It is an arithmetic number, because the mean of its divisors is an integer number (47689224).

Almost surely, 2^557612691 is an apocalyptic number.

557612691 is a deficient number, since it is larger than the sum of its proper divisors (205414893).

557612691 is a wasteful number, since it uses less digits than its factorization.

557612691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12850.

The product of its digits is 113400, while the sum is 42.

The square root of 557612691 is about 23613.8241502727. The cubic root of 557612691 is about 823.0841080840.

The spelling of 557612691 in words is "five hundred fifty-seven million, six hundred twelve thousand, six hundred ninety-one".