138801706 has 8 divisors (see below), whose sum is σ = 209406564. Its totient is φ = 68999520.

The previous prime is 138801697. The next prime is 138801713. The reversal of 138801706 is 607108831.

It can be written as a sum of positive squares in 2 ways, for example, as 137851081 + 950625 = 11741^2 + 975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 200235 + ... + 200926.

Almost surely, 2^138801706 is an apocalyptic number.

138801706 is a deficient number, since it is larger than the sum of its proper divisors (70604858).

138801706 is a wasteful number, since it uses less digits than its factorization.

138801706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401336.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 138801706 is about 11781.4135824187. The cubic root of 138801706 is about 517.7637026423.

The spelling of 138801706 in words is "one hundred thirty-eight million, eight hundred one thousand, seven hundred six".