57806690 has 16 divisors (see below), whose sum is σ = 105064128. Its totient is φ = 22897776.

The previous prime is 57806689. The next prime is 57806701. The reversal of 57806690 is 9660875.

It is a happy number.

57806690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57806690² = 6683226817512200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27032 + ... + 29091.

It is an arithmetic number, because the mean of its divisors is an integer number (6566508).

Almost surely, 2^57806690 is an apocalyptic number.

57806690 is a deficient number, since it is larger than the sum of its proper divisors (47257438).

57806690 is a wasteful number, since it uses less digits than its factorization.

57806690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56233.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 57806690 is about 7603.0710900267. The cubic root of 57806690 is about 386.6571399093.

The spelling of 57806690 in words is "fifty-seven million, eight hundred six thousand, six hundred ninety".