136965661 has 16 divisors (see below), whose sum is σ = 168284160. Its totient is φ = 108848880.

The previous prime is 136965641. The next prime is 136965677. The reversal of 136965661 is 166569631.

136965661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136965661 - 2²⁵ = 103411229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136965611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4705 + ... + 17206.

It is an arithmetic number, because the mean of its divisors is an integer number (10517760).

Almost surely, 2^136965661 is an apocalyptic number.

It is an amenable number.

136965661 is a deficient number, since it is larger than the sum of its proper divisors (31318499).

136965661 is a wasteful number, since it uses less digits than its factorization.

136965661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21984.

The product of its digits is 174960, while the sum is 43.

The square root of 136965661 is about 11703.2329294089. The cubic root of 136965661 is about 515.4705988438.

The spelling of 136965661 in words is "one hundred thirty-six million, nine hundred sixty-five thousand, six hundred sixty-one".