136397613 has 72 divisors (see below), whose sum is σ = 228215232. Its totient is φ = 72019200.

The previous prime is 136397581. The next prime is 136397621. The reversal of 136397613 is 316793631.

It is not a de Polignac number, because 136397613 - 2⁵ = 136397581 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136397113) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4399908 + ... + 4399938.

It is an arithmetic number, because the mean of its divisors is an integer number (3169656).

Almost surely, 2^136397613 is an apocalyptic number.

It is an amenable number.

136397613 is a deficient number, since it is larger than the sum of its proper divisors (91817619).

136397613 is a wasteful number, since it uses less digits than its factorization.

136397613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 85 counting only the distinct ones).

The product of its digits is 61236, while the sum is 39.

The square root of 136397613 is about 11678.9388644688. The cubic root of 136397613 is about 514.7569947274.

The spelling of 136397613 in words is "one hundred thirty-six million, three hundred ninety-seven thousand, six hundred thirteen".