117638 has 8 divisors (see below), whose sum is σ = 178200. Its totient is φ = 58240.

The previous prime is 117619. The next prime is 117643. The reversal of 117638 is 836711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38 + ... + 486.

It is an arithmetic number, because the mean of its divisors is an integer number (22275).

117638 is a Friedman number, since it can be written as 7^6-8-3*1*1, using all its digits and the basic arithmetic operations.

2¹¹⁷⁶³⁸ is an apocalyptic number.

117638 is a deficient number, since it is larger than the sum of its proper divisors (60562).

117638 is a wasteful number, since it uses less digits than its factorization.

117638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 1008, while the sum is 26.

The square root of 117638 is about 342.9839646397. The cubic root of 117638 is about 48.9984728109.

The spelling of 117638 in words is "one hundred seventeen thousand, six hundred thirty-eight".