138682 has 4 divisors (see below), whose sum is σ = 208026. Its totient is φ = 69340.

The previous prime is 138679. The next prime is 138683. The reversal of 138682 is 286831.

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., 128881 + 9801 = 359^2 + 99^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138682.

It is not an unprimeable number, because it can be changed into a prime (138683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34669 + ... + 34672.

2¹³⁸⁶⁸² is an apocalyptic number.

138682 is a deficient number, since it is larger than the sum of its proper divisors (69344).

138682 is an equidigital number, since it uses as much as digits as its factorization.

138682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69343.

The product of its digits is 2304, while the sum is 28.

The square root of 138682 is about 372.4003222340. The cubic root of 138682 is about 51.7614815789.

It can be divided in two parts, 138 and 682, that added together give a triangular number (820 = T₄₀).

The spelling of 138682 in words is "one hundred thirty-eight thousand, six hundred eighty-two".