138654 has 12 divisors (see below), whose sum is σ = 300456. Its totient is φ = 46212.

The previous prime is 138647. The next prime is 138661. The reversal of 138654 is 456831.

138654 is a `hidden beast` number, since 1 + 3 + 8 + 654 = 666.

It is an interprime number because it is at equal distance from previous prime (138647) and next prime (138661).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3834 + ... + 3869.

It is an arithmetic number, because the mean of its divisors is an integer number (25038).

2¹³⁸⁶⁵⁴ is an apocalyptic number.

138654 is an abundant number, since it is smaller than the sum of its proper divisors (161802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138654 is a wasteful number, since it uses less digits than its factorization.

138654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7711 (or 7708 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 138654 is about 372.3627263838. The cubic root of 138654 is about 51.7579977837.

The spelling of 138654 in words is "one hundred thirty-eight thousand, six hundred fifty-four".