137606657 has 4 divisors (see below), whose sum is σ = 137640960. Its totient is φ = 137572356.

The previous prime is 137606639. The next prime is 137606669. The reversal of 137606657 is 756606731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137606657 - 2⁶ = 137606593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137609657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10193 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (34410240).

Almost surely, 2^137606657 is an apocalyptic number.

It is an amenable number.

137606657 is a deficient number, since it is larger than the sum of its proper divisors (34303).

137606657 is an equidigital number, since it uses as much as digits as its factorization.

137606657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34302.

The product of its (nonzero) digits is 158760, while the sum is 41.

The square root of 137606657 is about 11730.5863877302. The cubic root of 137606657 is about 516.2734776613.

The spelling of 137606657 in words is "one hundred thirty-seven million, six hundred six thousand, six hundred fifty-seven".