138707066 has 16 divisors (see below), whose sum is σ = 217382400. Its totient is φ = 66253968.

The previous prime is 138707057. The next prime is 138707071. The reversal of 138707066 is 660707831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49655 + ... + 52373.

It is an arithmetic number, because the mean of its divisors is an integer number (13586400).

Almost surely, 2^138707066 is an apocalyptic number.

138707066 is a deficient number, since it is larger than the sum of its proper divisors (78675334).

138707066 is a wasteful number, since it uses less digits than its factorization.

138707066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 138707066 is about 11777.3964015821. The cubic root of 138707066 is about 517.6459992428.

The spelling of 138707066 in words is "one hundred thirty-eight million, seven hundred seven thousand, sixty-six".