137518685 has 8 divisors (see below), whose sum is σ = 165107160. Its totient is φ = 109958464.

The previous prime is 137518673. The next prime is 137518747. The reversal of 137518685 is 586815731.

137518685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 605284 + 136913401 = 778^2 + 11701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137518685 - 2⁴ = 137518669 is a prime.

It is a super-2 number, since 2×137518685² = 37822777448258450, which contains 22 as substring.

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, 5771 + ... + 17559.

It is an arithmetic number, because the mean of its divisors is an integer number (20638395).

Almost surely, 2^137518685 is an apocalyptic number.

It is an amenable number.

137518685 is a deficient number, since it is larger than the sum of its proper divisors (27588475).

137518685 is a wasteful number, since it uses less digits than its factorization.

137518685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14127.

The product of its digits is 201600, while the sum is 44.

The square root of 137518685 is about 11726.8361035703. The cubic root of 137518685 is about 516.1634362498.

The spelling of 137518685 in words is "one hundred thirty-seven million, five hundred eighteen thousand, six hundred eighty-five".