138000667 has 32 divisors (see below), whose sum is σ = 174873600. Its totient is φ = 106178688.

The previous prime is 138000661. The next prime is 138000673. The reversal of 138000667 is 766000831.

138000667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138000661) and next prime (138000673).

It is not a de Polignac number, because 138000667 - 2³ = 138000659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138000661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 602509 + ... + 602737.

It is an arithmetic number, because the mean of its divisors is an integer number (5464800).

Almost surely, 2^138000667 is an apocalyptic number.

138000667 is a deficient number, since it is larger than the sum of its proper divisors (36872933).

138000667 is a wasteful number, since it uses less digits than its factorization.

138000667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 138000667 is about 11747.3685138417. The cubic root of 138000667 is about 516.7657578007.

The spelling of 138000667 in words is "one hundred thirty-eight million, six hundred sixty-seven", and thus it is an aban number.