137655668 has 12 divisors (see below), whose sum is σ = 246023232. Its totient is φ = 67363320.

The previous prime is 137655643. The next prime is 137655671. The reversal of 137655668 is 866556731.

It is a Harshad number since it is a multiple of its sum of digits (47).

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 3 ways as a sum of consecutive naturals, for example, 365918 + ... + 366293.

It is an arithmetic number, because the mean of its divisors is an integer number (20501936).

Almost surely, 2^137655668 is an apocalyptic number.

It is an amenable number.

137655668 is a deficient number, since it is larger than the sum of its proper divisors (108367564).

137655668 is a wasteful number, since it uses less digits than its factorization.

137655668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732262 (or 732260 counting only the distinct ones).

The product of its digits is 907200, while the sum is 47.

The square root of 137655668 is about 11732.6752277560. The cubic root of 137655668 is about 516.3347636401.

The spelling of 137655668 in words is "one hundred thirty-seven million, six hundred fifty-five thousand, six hundred sixty-eight".