136258668 has 72 divisors (see below), whose sum is σ = 423926048. Its totient is φ = 35935488.

The previous prime is 136258657. The next prime is 136258669. The reversal of 136258668 is 866852631.

136258668 is a `hidden beast` number, since 1 + 3 + 6 + 2 + 586 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (136258669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17521 + ... + 24072.

Almost surely, 2^136258668 is an apocalyptic number.

136258668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136258668 is an abundant number, since it is smaller than the sum of its proper divisors (287667380).

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

136258668 is a wasteful number, since it uses less digits than its factorization.

136258668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41623 (or 41618 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 136258668 is about 11672.9888203493. The cubic root of 136258668 is about 514.5821451117.

The spelling of 136258668 in words is "one hundred thirty-six million, two hundred fifty-eight thousand, six hundred sixty-eight".