557679 has 4 divisors (see below), whose sum is σ = 743576. Its totient is φ = 371784.

The previous prime is 557671. The next prime is 557693. The reversal of 557679 is 976755.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 557679 - 2³ = 557671 is a prime.

It is a super-2 number, since 2×557679² = 622011734082, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557671) 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, 92944 + ... + 92949.

It is an arithmetic number, because the mean of its divisors is an integer number (185894).

2⁵⁵⁷⁶⁷⁹ is an apocalyptic number.

557679 is a deficient number, since it is larger than the sum of its proper divisors (185897).

557679 is a wasteful number, since it uses less digits than its factorization.

557679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185896.

The product of its digits is 66150, while the sum is 39.

The square root of 557679 is about 746.7790837992. The cubic root of 557679 is about 82.3116732713.

The spelling of 557679 in words is "five hundred fifty-seven thousand, six hundred seventy-nine".