138200668 has 24 divisors (see below), whose sum is σ = 249598944. Its totient is φ = 66912000.

The previous prime is 138200659. The next prime is 138200687. The reversal of 138200668 is 866002831.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19393 + ... + 25543.

It is an arithmetic number, because the mean of its divisors is an integer number (10399956).

Almost surely, 2^138200668 is an apocalyptic number.

It is an amenable number.

138200668 is a deficient number, since it is larger than the sum of its proper divisors (111398276).

138200668 is a wasteful number, since it uses less digits than its factorization.

138200668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6333 (or 6331 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 138200668 is about 11755.8780191018. The cubic root of 138200668 is about 517.0152826313.

The spelling of 138200668 in words is "one hundred thirty-eight million, two hundred thousand, six hundred sixty-eight".