136640764 has 24 divisors (see below), whose sum is σ = 272665008. Its totient is φ = 59354880.

The previous prime is 136640759. The next prime is 136640773. The reversal of 136640764 is 467046631.

136640764 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76402 + ... + 78169.

It is an arithmetic number, because the mean of its divisors is an integer number (11361042).

Almost surely, 2^136640764 is an apocalyptic number.

It is an amenable number.

136640764 is a deficient number, since it is larger than the sum of its proper divisors (136024244).

136640764 is a wasteful number, since it uses less digits than its factorization.

136640764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154605 (or 154603 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 136640764 is about 11689.3440363435. The cubic root of 136640764 is about 515.0626925910.

The spelling of 136640764 in words is "one hundred thirty-six million, six hundred forty thousand, seven hundred sixty-four".