138696366 has 16 divisors (see below), whose sum is σ = 277977600. Its totient is φ = 46134648.

The previous prime is 138696347. The next prime is 138696367. The reversal of 138696366 is 663696831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138696367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21256 + ... + 27003.

It is an arithmetic number, because the mean of its divisors is an integer number (17373600).

Almost surely, 2^138696366 is an apocalyptic number.

138696366 is an abundant number, since it is smaller than the sum of its proper divisors (139281234).

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

138696366 is a wasteful number, since it uses less digits than its factorization.

138696366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48743.

The product of its digits is 839808, while the sum is 48.

The square root of 138696366 is about 11776.9421328289. The cubic root of 138696366 is about 517.6326883260.

The spelling of 138696366 in words is "one hundred thirty-eight million, six hundred ninety-six thousand, three hundred sixty-six".