136915613 has 8 divisors (see below), whose sum is σ = 137725560. Its totient is φ = 136108800.

The previous prime is 136915607. The next prime is 136915621. The reversal of 136915613 is 316519631.

It can be written as a sum of positive squares in 4 ways, for example, as 41306329 + 95609284 = 6427^2 + 9778^2 .

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 136915613 - 2⁶ = 136915549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136915633) 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, 227513 + ... + 228113.

It is an arithmetic number, because the mean of its divisors is an integer number (17215695).

Almost surely, 2^136915613 is an apocalyptic number.

It is an amenable number.

136915613 is a deficient number, since it is larger than the sum of its proper divisors (809947).

136915613 is an equidigital number, since it uses as much as digits as its factorization.

136915613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1567.

The product of its digits is 14580, while the sum is 35.

The square root of 136915613 is about 11701.0945214540. The cubic root of 136915613 is about 515.4078059382.

The spelling of 136915613 in words is "one hundred thirty-six million, nine hundred fifteen thousand, six hundred thirteen".