57638906 has 16 divisors (see below), whose sum is σ = 93285864. Its totient is φ = 26552064.

The previous prime is 57638879. The next prime is 57638909. The reversal of 57638906 is 60983675.

It can be written as a sum of positive squares in 4 ways, for example, as 17430625 + 40208281 = 4175^2 + 6341^2 .

It is not an unprimeable number, because it can be changed into a prime (57638909) 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, 14246 + ... + 17838.

Almost surely, 2^57638906 is an apocalyptic number.

57638906 is a deficient number, since it is larger than the sum of its proper divisors (35646958).

57638906 is a wasteful number, since it uses less digits than its factorization.

57638906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 57638906 is about 7592.0291095332. The cubic root of 57638906 is about 386.2826864250.

The spelling of 57638906 in words is "fifty-seven million, six hundred thirty-eight thousand, nine hundred six".