137561864 has 32 divisors (see below), whose sum is σ = 282428640. Its totient is φ = 62294400.

The previous prime is 137561821. The next prime is 137561867. The reversal of 137561864 is 468165731.

It is not an unprimeable number, because it can be changed into a prime (137561867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21947 + ... + 27509.

It is an arithmetic number, because the mean of its divisors is an integer number (8825895).

Almost surely, 2^137561864 is an apocalyptic number.

It is an amenable number.

137561864 is an abundant number, since it is smaller than the sum of its proper divisors (144866776).

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

137561864 is a wasteful number, since it uses less digits than its factorization.

137561864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5861 (or 5857 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 137561864 is about 11728.6769927388. The cubic root of 137561864 is about 516.2174533670.

The spelling of 137561864 in words is "one hundred thirty-seven million, five hundred sixty-one thousand, eight hundred sixty-four".