138695 has 4 divisors (see below), whose sum is σ = 166440. Its totient is φ = 110952.

The previous prime is 138683. The next prime is 138727. The reversal of 138695 is 596831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138695 - 2⁴ = 138679 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 138695.

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, 13865 + ... + 13874.

It is an arithmetic number, because the mean of its divisors is an integer number (41610).

2¹³⁸⁶⁹⁵ is an apocalyptic number.

138695 is a deficient number, since it is larger than the sum of its proper divisors (27745).

138695 is an equidigital number, since it uses as much as digits as its factorization.

138695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27744.

The product of its digits is 6480, while the sum is 32.

The square root of 138695 is about 372.4177761601. The cubic root of 138695 is about 51.7630988958.

The spelling of 138695 in words is "one hundred thirty-eight thousand, six hundred ninety-five".