137631664 has 10 divisors (see below), whose sum is σ = 266661380. Its totient is φ = 68815824.

The previous prime is 137631623. The next prime is 137631671. The reversal of 137631664 is 466136731.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4300974 + ... + 4301005.

It is an arithmetic number, because the mean of its divisors is an integer number (26666138).

Almost surely, 2^137631664 is an apocalyptic number.

It is an amenable number.

137631664 is a deficient number, since it is larger than the sum of its proper divisors (129029716).

137631664 is an equidigital number, since it uses as much as digits as its factorization.

137631664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601987 (or 8601981 counting only the distinct ones).

The product of its digits is 54432, while the sum is 37.

The square root of 137631664 is about 11731.6522280538. The cubic root of 137631664 is about 516.3047495711.

The spelling of 137631664 in words is "one hundred thirty-seven million, six hundred thirty-one thousand, six hundred sixty-four".