136818668 has 24 divisors (see below), whose sum is σ = 274039584. Its totient is φ = 58550400.

The previous prime is 136818659. The next prime is 136818679. The reversal of 136818668 is 866818631.

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, 18098 + ... + 24518.

It is an arithmetic number, because the mean of its divisors is an integer number (11418316).

Almost surely, 2^136818668 is an apocalyptic number.

It is an amenable number.

136818668 is an abundant number, since it is smaller than the sum of its proper divisors (137220916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136818668 is a wasteful number, since it uses less digits than its factorization.

136818668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193 (or 7191 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 136818668 is about 11696.9512267086. The cubic root of 136818668 is about 515.2861299989.

The spelling of 136818668 in words is "one hundred thirty-six million, eight hundred eighteen thousand, six hundred sixty-eight".