137612665 has 8 divisors (see below), whose sum is σ = 167397768. Its totient is φ = 108581760.

The previous prime is 137612653. The next prime is 137612669. The reversal of 137612665 is 566216731.

It can be written as a sum of positive squares in 4 ways, for example, as 62599744 + 75012921 = 7912^2 + 8661^2 .

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

It is not a de Polignac number, because 137612665 - 2⁵ = 137612633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137612669) 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, 188146 + ... + 188875.

It is an arithmetic number, because the mean of its divisors is an integer number (20924721).

Almost surely, 2^137612665 is an apocalyptic number.

It is an amenable number.

137612665 is a deficient number, since it is larger than the sum of its proper divisors (29785103).

137612665 is an equidigital number, since it uses as much as digits as its factorization.

137612665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377099.

The product of its digits is 45360, while the sum is 37.

The square root of 137612665 is about 11730.8424676150. The cubic root of 137612665 is about 516.2809911687.

It can be divided in two parts, 1376 and 12665, that added together give a palindrome (14041).

The spelling of 137612665 in words is "one hundred thirty-seven million, six hundred twelve thousand, six hundred sixty-five".