136611820 has 12 divisors (see below), whose sum is σ = 286884864. Its totient is φ = 54644720.

The previous prime is 136611791. The next prime is 136611833. The reversal of 136611820 is 28116631.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415276 + ... + 3415315.

It is an arithmetic number, because the mean of its divisors is an integer number (23907072).

Almost surely, 2^136611820 is an apocalyptic number.

136611820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136611820 is an abundant number, since it is smaller than the sum of its proper divisors (150273044).

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

136611820 is a wasteful number, since it uses less digits than its factorization.

136611820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830600 (or 6830598 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 136611820 is about 11688.1059201224. The cubic root of 136611820 is about 515.0263222164.

The spelling of 136611820 in words is "one hundred thirty-six million, six hundred eleven thousand, eight hundred twenty".