136263613 has 4 divisors (see below), whose sum is σ = 136289980. Its totient is φ = 136237248.

The previous prime is 136263587. The next prime is 136263641. The reversal of 136263613 is 316362631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91814724 + 44448889 = 9582^2 + 6667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136263613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136263643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2598 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (34072495).

Almost surely, 2^136263613 is an apocalyptic number.

It is an amenable number.

136263613 is a deficient number, since it is larger than the sum of its proper divisors (26367).

136263613 is an equidigital number, since it uses as much as digits as its factorization.

136263613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26366.

The product of its digits is 11664, while the sum is 31.

The square root of 136263613 is about 11673.2006322174. The cubic root of 136263613 is about 514.5883699828.

It can be divided in two parts, 13 and 6263613, that added together give a palindrome (6263626).

The spelling of 136263613 in words is "one hundred thirty-six million, two hundred sixty-three thousand, six hundred thirteen".