137651657 has 12 divisors (see below), whose sum is σ = 162943620. Its totient is φ = 115510560.

The previous prime is 137651639. The next prime is 137651659. The reversal of 137651657 is 756156731.

It can be written as a sum of positive squares in 2 ways, for example, as 85581001 + 52070656 = 9251^2 + 7216^2 .

It is not a de Polignac number, because 137651657 - 2⁸ = 137651401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137651659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42182 + ... + 45327.

It is an arithmetic number, because the mean of its divisors is an integer number (13578635).

Almost surely, 2^137651657 is an apocalyptic number.

It is an amenable number.

137651657 is a deficient number, since it is larger than the sum of its proper divisors (25291963).

137651657 is a wasteful number, since it uses less digits than its factorization.

137651657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87544 (or 87533 counting only the distinct ones).

The product of its digits is 132300, while the sum is 41.

The square root of 137651657 is about 11732.5042936280. The cubic root of 137651657 is about 516.3297486175.

The spelling of 137651657 in words is "one hundred thirty-seven million, six hundred fifty-one thousand, six hundred fifty-seven".