557766623 has 8 divisors (see below), whose sum is σ = 565308480. Its totient is φ = 550236960.

The previous prime is 557766619. The next prime is 557766667. The reversal of 557766623 is 326667755.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 557766623 - 2² = 557766619 is a prime.

It is a super-2 number, since 2×557766623² = 622207211465648258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557766323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123953 + ... + 128373.

It is an arithmetic number, because the mean of its divisors is an integer number (70663560).

Almost surely, 2^557766623 is an apocalyptic number.

557766623 is a deficient number, since it is larger than the sum of its proper divisors (7541857).

557766623 is a wasteful number, since it uses less digits than its factorization.

557766623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6097.

The product of its digits is 1587600, while the sum is 47.

The square root of 557766623 is about 23617.0832873156. The cubic root of 557766623 is about 823.1598400560.

The spelling of 557766623 in words is "five hundred fifty-seven million, seven hundred sixty-six thousand, six hundred twenty-three".