137471644 has 12 divisors (see below), whose sum is σ = 251035344. Its totient is φ = 65747264.

The previous prime is 137471627. The next prime is 137471657. The reversal of 137471644 is 446174731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 747037 + ... + 747220.

It is an arithmetic number, because the mean of its divisors is an integer number (20919612).

Almost surely, 2^137471644 is an apocalyptic number.

It is an amenable number.

137471644 is a deficient number, since it is larger than the sum of its proper divisors (113563700).

137471644 is a wasteful number, since it uses less digits than its factorization.

137471644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494284 (or 1494282 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 137471644 is about 11724.8302333125. The cubic root of 137471644 is about 516.1045748829.

The spelling of 137471644 in words is "one hundred thirty-seven million, four hundred seventy-one thousand, six hundred forty-four".