136613865 has 8 divisors (see below), whose sum is σ = 218582208. Its totient is φ = 72860720.

The previous prime is 136613863. The next prime is 136613899. The reversal of 136613865 is 568316631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 136613865 - 2¹ = 136613863 is a prime.

It is a super-2 number, since 2×136613865² = 37326696220476450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136613863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4553781 + ... + 4553810.

It is an arithmetic number, because the mean of its divisors is an integer number (27322776).

Almost surely, 2^136613865 is an apocalyptic number.

136613865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136613865 is a deficient number, since it is larger than the sum of its proper divisors (81968343).

136613865 is an equidigital number, since it uses as much as digits as its factorization.

136613865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9107599.

The product of its digits is 77760, while the sum is 39.

The square root of 136613865 is about 11688.1934018906. The cubic root of 136613865 is about 515.0288920857.

The spelling of 136613865 in words is "one hundred thirty-six million, six hundred thirteen thousand, eight hundred sixty-five".