136646988 has 24 divisors (see below), whose sum is σ = 319312560. Its totient is φ = 45481920.

The previous prime is 136646987. The next prime is 136647023. The reversal of 136646988 is 889646631.

It is a self number, because there is not a number n which added to its sum of digits gives 136646988.

It is not an unprimeable number, because it can be changed into a prime (136646981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 478 + ... + 16538.

It is an arithmetic number, because the mean of its divisors is an integer number (13304690).

Almost surely, 2^136646988 is an apocalyptic number.

It is an amenable number.

136646988 is an abundant number, since it is smaller than the sum of its proper divisors (182665572).

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

136646988 is a wasteful number, since it uses less digits than its factorization.

136646988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16777 (or 16775 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 136646988 is about 11689.6102586870. The cubic root of 136646988 is about 515.0705128574.

The spelling of 136646988 in words is "one hundred thirty-six million, six hundred forty-six thousand, nine hundred eighty-eight".