137860681 has 8 divisors (see below), whose sum is σ = 158138624. Its totient is φ = 117728640.

The previous prime is 137860663. The next prime is 137860687. The reversal of 137860681 is 186068731.

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 137860681 - 2⁹ = 137860169 is a prime.

It is a super-2 number, since 2×137860681² = 38011134731567522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (137860687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34440 + ... + 38233.

It is an arithmetic number, because the mean of its divisors is an integer number (19767328).

Almost surely, 2^137860681 is an apocalyptic number.

It is an amenable number.

137860681 is a deficient number, since it is larger than the sum of its proper divisors (20277943).

137860681 is an equidigital number, since it uses as much as digits as its factorization.

137860681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72951.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 137860681 is about 11741.4088166625. The cubic root of 137860681 is about 516.5909652992.

The spelling of 137860681 in words is "one hundred thirty-seven million, eight hundred sixty thousand, six hundred eighty-one".