138667796 has 12 divisors (see below), whose sum is σ = 242847360. Its totient is φ = 69282840.

The previous prime is 138667787. The next prime is 138667799. The reversal of 138667796 is 697766831.

138667796 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138667799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6290 + ... + 17801.

It is an arithmetic number, because the mean of its divisors is an integer number (20237280).

Almost surely, 2^138667796 is an apocalyptic number.

It is an amenable number.

138667796 is a deficient number, since it is larger than the sum of its proper divisors (104179564).

138667796 is a wasteful number, since it uses less digits than its factorization.

138667796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25534 (or 25532 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 53.

The square root of 138667796 is about 11775.7291069386. The cubic root of 138667796 is about 517.5971435797.

The spelling of 138667796 in words is "one hundred thirty-eight million, six hundred sixty-seven thousand, seven hundred ninety-six".