138674 has 4 divisors (see below), whose sum is σ = 208014. Its totient is φ = 69336.

The previous prime is 138661. The next prime is 138679. The reversal of 138674 is 476831.

138674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 117649 + 21025 = 343^2 + 145^2 .

It is a super-3 number, since 3×138674³ = 8000302033338072, which contains 333 as substring.

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

138674 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34667 + ... + 34670.

2¹³⁸⁶⁷⁴ is an apocalyptic number.

138674 is a deficient number, since it is larger than the sum of its proper divisors (69340).

138674 is an equidigital number, since it uses as much as digits as its factorization.

138674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69339.

The product of its digits is 4032, while the sum is 29.

The square root of 138674 is about 372.3895809498. The cubic root of 138674 is about 51.7604862567.

The spelling of 138674 in words is "one hundred thirty-eight thousand, six hundred seventy-four".