557878966 has 16 divisors (see below), whose sum is σ = 845760528. Its totient is φ = 275968000.

The previous prime is 557878963. The next prime is 557879009. The reversal of 557878966 is 669878755.

It is a super-2 number, since 2×557878966² = 622457881410458312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (557878963) 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, 142941 + ... + 146791.

It is an arithmetic number, because the mean of its divisors is an integer number (52860033).

Almost surely, 2^557878966 is an apocalyptic number.

557878966 is a deficient number, since it is larger than the sum of its proper divisors (287881562).

557878966 is a wasteful number, since it uses less digits than its factorization.

557878966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4607.

The product of its digits is 25401600, while the sum is 61.

The square root of 557878966 is about 23619.4615942024. The cubic root of 557878966 is about 823.2151021400.

The spelling of 557878966 in words is "five hundred fifty-seven million, eight hundred seventy-eight thousand, nine hundred sixty-six".