136642560 has 136 divisors (see below), whose sum is σ = 440398560. Its totient is φ = 36175872.

The previous prime is 136642559. The next prime is 136642579. The reversal of 136642560 is 65246631.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 982971 + ... + 983109.

Almost surely, 2^136642560 is an apocalyptic number.

136642560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 136642560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220199280).

136642560 is an abundant number, since it is smaller than the sum of its proper divisors (303756000).

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

136642560 is an frugal number, since it uses more digits than its factorization.

136642560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 136642560 is about 11689.4208581948. The cubic root of 136642560 is about 515.0649492347.

The spelling of 136642560 in words is "one hundred thirty-six million, six hundred forty-two thousand, five hundred sixty".