137810681 has 8 divisors (see below), whose sum is σ = 143329920. Its totient is φ = 132385968.

The previous prime is 137810671. The next prime is 137810707. The reversal of 137810681 is 186018731.

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 137810681 - 2¹⁴ = 137794297 is a prime.

It is a super-2 number, since 2×137810681² = 37983567595367522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137810671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20651 + ... + 26496.

It is an arithmetic number, because the mean of its divisors is an integer number (17916240).

Almost surely, 2^137810681 is an apocalyptic number.

It is an amenable number.

137810681 is a deficient number, since it is larger than the sum of its proper divisors (5519239).

137810681 is an equidigital number, since it uses as much as digits as its factorization.

137810681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47263.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 137810681 is about 11739.2794071868. The cubic root of 137810681 is about 516.5285044840.

The spelling of 137810681 in words is "one hundred thirty-seven million, eight hundred ten thousand, six hundred eighty-one".