138696674 has 8 divisors (see below), whose sum is σ = 208298460. Its totient is φ = 69263856.

The previous prime is 138696667. The next prime is 138696689. The reversal of 138696674 is 476696831.

It can be written as a sum of positive squares in 2 ways, for example, as 123054649 + 15642025 = 11093^2 + 3955^2 .

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, 40169 + ... + 43484.

Almost surely, 2^138696674 is an apocalyptic number.

138696674 is a deficient number, since it is larger than the sum of its proper divisors (69601786).

138696674 is an equidigital number, since it uses as much as digits as its factorization.

138696674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84484.

The product of its digits is 1306368, while the sum is 50.

The square root of 138696674 is about 11776.9552092211. The cubic root of 138696674 is about 517.6330714910.

The spelling of 138696674 in words is "one hundred thirty-eight million, six hundred ninety-six thousand, six hundred seventy-four".