8657138 has 16 divisors (see below), whose sum is σ = 15353280. Its totient is φ = 3582096.

The previous prime is 8657123. The next prime is 8657161. The reversal of 8657138 is 8317568.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10256 + ... + 11067.

It is an arithmetic number, because the mean of its divisors is an integer number (959580).

Almost surely, 2^8657138 is an apocalyptic number.

8657138 is a deficient number, since it is larger than the sum of its proper divisors (6696142).

8657138 is a wasteful number, since it uses less digits than its factorization.

8657138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21361.

The product of its digits is 40320, while the sum is 38.

The square root of 8657138 is about 2942.3014801342. The cubic root of 8657138 is about 205.3326979188.

The spelling of 8657138 in words is "eight million, six hundred fifty-seven thousand, one hundred thirty-eight".