136870565 has 12 divisors (see below), whose sum is σ = 177851844. Its totient is φ = 101073024.

The previous prime is 136870561. The next prime is 136870577. The reversal of 136870565 is 565078631.

It can be written as a sum of positive squares in 6 ways, for example, as 27730756 + 109139809 = 5266^2 + 10447^2 .

It is not a de Polignac number, because 136870565 - 2² = 136870561 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 (136870561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80144 + ... + 81833.

It is an arithmetic number, because the mean of its divisors is an integer number (14820987).

Almost surely, 2^136870565 is an apocalyptic number.

It is an amenable number.

136870565 is a deficient number, since it is larger than the sum of its proper divisors (40981279).

136870565 is a wasteful number, since it uses less digits than its factorization.

136870565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162008 (or 161995 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 136870565 is about 11699.1694149628. The cubic root of 136870565 is about 515.3512732142.

The spelling of 136870565 in words is "one hundred thirty-six million, eight hundred seventy thousand, five hundred sixty-five".