136844660 has 12 divisors (see below), whose sum is σ = 287373828. Its totient is φ = 54737856.

The previous prime is 136844651. The next prime is 136844663. The reversal of 136844660 is 66448631.

It can be written as a sum of positive squares in 2 ways, for example, as 74718736 + 62125924 = 8644^2 + 7882^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136844663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3421097 + ... + 3421136.

It is an arithmetic number, because the mean of its divisors is an integer number (23947819).

Almost surely, 2^136844660 is an apocalyptic number.

136844660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136844660 is an abundant number, since it is smaller than the sum of its proper divisors (150529168).

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

136844660 is a wasteful number, since it uses less digits than its factorization.

136844660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842242 (or 6842240 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 136844660 is about 11698.0622326948. The cubic root of 136844660 is about 515.3187582682.

The spelling of 136844660 in words is "one hundred thirty-six million, eight hundred forty-four thousand, six hundred sixty".