138660076 has 12 divisors (see below), whose sum is σ = 246633520. Its totient is φ = 68193360.

The previous prime is 138660061. The next prime is 138660083. The reversal of 138660076 is 670066831.

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, 283896 + ... + 284383.

Almost surely, 2^138660076 is an apocalyptic number.

It is an amenable number.

138660076 is a deficient number, since it is larger than the sum of its proper divisors (107973444).

138660076 is a wasteful number, since it uses less digits than its factorization.

138660076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568344 (or 568342 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 138660076 is about 11775.4013095096. The cubic root of 138660076 is about 517.5875380711.

The spelling of 138660076 in words is "one hundred thirty-eight million, six hundred sixty thousand, seventy-six".