137986870 has 16 divisors (see below), whose sum is σ = 283858848. Its totient is φ = 47309760.

The previous prime is 137986831. The next prime is 137986883. The reversal of 137986870 is 78689731.

It is a congruent number.

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, 985551 + ... + 985690.

It is an arithmetic number, because the mean of its divisors is an integer number (17741178).

Almost surely, 2^137986870 is an apocalyptic number.

137986870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

137986870 is an abundant number, since it is smaller than the sum of its proper divisors (145871978).

137986870 is a wasteful number, since it uses less digits than its factorization.

137986870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971255.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 137986870 is about 11746.7812612647. The cubic root of 137986870 is about 516.7485355294.

The spelling of 137986870 in words is "one hundred thirty-seven million, nine hundred eighty-six thousand, eight hundred seventy".