557981679 has 16 divisors (see below), whose sum is σ = 801368064. Its totient is φ = 344335200.

The previous prime is 557981659. The next prime is 557981689. The reversal of 557981679 is 976189755.

It is not a de Polignac number, because 557981679 - 2⁵ = 557981647 is a prime.

It is a super-2 number, since 2×557981679² = 622687108199318082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557981659) 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, 128292 + ... + 132569.

It is an arithmetic number, because the mean of its divisors is an integer number (50085504).

Almost surely, 2^557981679 is an apocalyptic number.

557981679 is a deficient number, since it is larger than the sum of its proper divisors (243386385).

557981679 is a wasteful number, since it uses less digits than its factorization.

557981679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260918.

The product of its digits is 4762800, while the sum is 57.

The square root of 557981679 is about 23621.6358239644. The cubic root of 557981679 is about 823.2656206868.

The spelling of 557981679 in words is "five hundred fifty-seven million, nine hundred eighty-one thousand, six hundred seventy-nine".