136505660 has 24 divisors (see below), whose sum is σ = 286951056. Its totient is φ = 54547200.

The previous prime is 136505657. The next prime is 136505669. The reversal of 136505660 is 66505631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136505669) 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, 21179 + ... + 26861.

It is an arithmetic number, because the mean of its divisors is an integer number (11956294).

Almost surely, 2^136505660 is an apocalyptic number.

136505660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136505660 is an abundant number, since it is smaller than the sum of its proper divisors (150445396).

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

136505660 is a wasteful number, since it uses less digits than its factorization.

136505660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6893 (or 6891 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 136505660 is about 11683.5636686758. The cubic root of 136505660 is about 514.8928799734.

The spelling of 136505660 in words is "one hundred thirty-six million, five hundred five thousand, six hundred sixty".