136634868 has 36 divisors (see below), whose sum is σ = 346173828. Its totient is φ = 45440640.

The previous prime is 136634857. The next prime is 136634893. The reversal of 136634868 is 868436631.

136634868 is a `hidden beast` number, since 1 + 3 + 6 + 634 + 8 + 6 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 34786404 + 101848464 = 5898^2 + 10092^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12480 + ... + 20712.

Almost surely, 2^136634868 is an apocalyptic number.

136634868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136634868 is an abundant number, since it is smaller than the sum of its proper divisors (209538960).

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

136634868 is a wasteful number, since it uses less digits than its factorization.

136634868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8704 (or 8699 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 136634868 is about 11689.0918381198. The cubic root of 136634868 is about 515.0552842276.

The spelling of 136634868 in words is "one hundred thirty-six million, six hundred thirty-four thousand, eight hundred sixty-eight".