136372613 has 8 divisors (see below), whose sum is σ = 147714168. Its totient is φ = 125152704.

The previous prime is 136372609. The next prime is 136372619. The reversal of 136372613 is 316273631.

136372613 = 8257² + 8258².

It can be written as a sum of positive squares in 4 ways, for example, as 68194564 + 68178049 = 8258^2 + 8257^2 .

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 136372613 - 2² = 136372609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136372613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136372619) 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, 28070 + ... + 32567.

It is an arithmetic number, because the mean of its divisors is an integer number (18464271).

Almost surely, 2^136372613 is an apocalyptic number.

136372613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

136372613 is the 8258-th centered square number.

It is an amenable number.

136372613 is a deficient number, since it is larger than the sum of its proper divisors (11341555).

136372613 is a wasteful number, since it uses less digits than its factorization.

136372613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60823.

The product of its digits is 13608, while the sum is 32.

The square root of 136372613 is about 11677.8685127038. The cubic root of 136372613 is about 514.7255432698.

The spelling of 136372613 in words is "one hundred thirty-six million, three hundred seventy-two thousand, six hundred thirteen".