138656600 has 24 divisors (see below), whose sum is σ = 322377060. Its totient is φ = 55462560.

The previous prime is 138656597. The next prime is 138656603. The reversal of 138656600 is 6656831.

It is an interprime number because it is at equal distance from previous prime (138656597) and next prime (138656603).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138656603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 346442 + ... + 346841.

Almost surely, 2^138656600 is an apocalyptic number.

138656600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138656600 is an abundant number, since it is smaller than the sum of its proper divisors (183720460).

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

138656600 is a wasteful number, since it uses less digits than its factorization.

138656600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693299 (or 693290 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 138656600 is about 11775.2537127656. The cubic root of 138656600 is about 517.5832129874.

The spelling of 138656600 in words is "one hundred thirty-eight million, six hundred fifty-six thousand, six hundred".