137651668 has 24 divisors (see below), whose sum is σ = 300331584. Its totient is φ = 53630400.

The previous prime is 137651659. The next prime is 137651677. The reversal of 137651668 is 866156731.

It is an interprime number because it is at equal distance from previous prime (137651659) and next prime (137651677).

It is a congruent number.

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, 223153 + ... + 223768.

It is an arithmetic number, because the mean of its divisors is an integer number (12513816).

Almost surely, 2^137651668 is an apocalyptic number.

It is an amenable number.

137651668 is an abundant number, since it is smaller than the sum of its proper divisors (162679916).

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

137651668 is a wasteful number, since it uses less digits than its factorization.

137651668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446943 (or 446941 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The square root of 137651668 is about 11732.5047624111. The cubic root of 137651668 is about 516.3297623711.

The spelling of 137651668 in words is "one hundred thirty-seven million, six hundred fifty-one thousand, six hundred sixty-eight".