137797644 has 24 divisors (see below), whose sum is σ = 323580208. Its totient is φ = 45639360.

The previous prime is 137797637. The next prime is 137797687. The reversal of 137797644 is 446797731.

It is a junction number, because it is equal to n+sod(n) for n = 137797593 and 137797602.

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, 34687 + ... + 38454.

Almost surely, 2^137797644 is an apocalyptic number.

It is an amenable number.

137797644 is an abundant number, since it is smaller than the sum of its proper divisors (185782564).

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

137797644 is a wasteful number, since it uses less digits than its factorization.

137797644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73305 (or 73303 counting only the distinct ones).

The product of its digits is 889056, while the sum is 48.

The square root of 137797644 is about 11738.7241214708. The cubic root of 137797644 is about 516.5122159679.

The spelling of 137797644 in words is "one hundred thirty-seven million, seven hundred ninety-seven thousand, six hundred forty-four".