137665368 has 24 divisors (see below), whose sum is σ = 372843900. Its totient is φ = 45888432.

The previous prime is 137665343. The next prime is 137665387. The reversal of 137665368 is 863566731.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 955938 + ... + 956081.

Almost surely, 2^137665368 is an apocalyptic number.

137665368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

137665368 is an abundant number, since it is smaller than the sum of its proper divisors (235178532).

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

137665368 is a wasteful number, since it uses less digits than its factorization.

137665368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912031 (or 1912024 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 137665368 is about 11733.0885959324. The cubic root of 137665368 is about 516.3468913150.

The spelling of 137665368 in words is "one hundred thirty-seven million, six hundred sixty-five thousand, three hundred sixty-eight".