138675 has 18 divisors (see below), whose sum is σ = 234732. Its totient is φ = 72240.

The previous prime is 138661. The next prime is 138679. The reversal of 138675 is 576831.

It is not a de Polignac number, because 138675 - 2⁷ = 138547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138679) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3204 + ... + 3246.

2¹³⁸⁶⁷⁵ is an apocalyptic number.

138675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138675 is a deficient number, since it is larger than the sum of its proper divisors (96057).

138675 is an equidigital number, since it uses as much as digits as its factorization.

138675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99 (or 51 counting only the distinct ones).

The product of its digits is 5040, while the sum is 30.

The square root of 138675 is about 372.3909236273. The cubic root of 138675 is about 51.7606106740.

The spelling of 138675 in words is "one hundred thirty-eight thousand, six hundred seventy-five".