137872623 has 20 divisors (see below), whose sum is σ = 214466968. Its totient is φ = 78780240.

The previous prime is 137872613. The next prime is 137872639. The reversal of 137872623 is 326278731.

It is not a de Polignac number, because 137872623 - 2⁵ = 137872591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137872613) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2368 + ... + 16773.

Almost surely, 2^137872623 is an apocalyptic number.

137872623 is a deficient number, since it is larger than the sum of its proper divisors (76594345).

137872623 is an frugal number, since it uses more digits than its factorization.

137872623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19172 (or 19151 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 137872623 is about 11741.9173476907. The cubic root of 137872623 is about 516.6058812060.

The spelling of 137872623 in words is "one hundred thirty-seven million, eight hundred seventy-two thousand, six hundred twenty-three".