136870566 has 32 divisors (see below), whose sum is σ = 329314560. Its totient is φ = 37047456.

The previous prime is 136870561. The next prime is 136870577. The reversal of 136870566 is 665078631.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 15 ways as a sum of consecutive naturals, for example, 84961 + ... + 86556.

It is an arithmetic number, because the mean of its divisors is an integer number (10291080).

Almost surely, 2^136870566 is an apocalyptic number.

136870566 is an abundant number, since it is smaller than the sum of its proper divisors (192443994).

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

136870566 is a wasteful number, since it uses less digits than its factorization.

136870566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171548.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 136870566 is about 11699.1694577008. The cubic root of 136870566 is about 515.3512744692.

The spelling of 136870566 in words is "one hundred thirty-six million, eight hundred seventy thousand, five hundred sixty-six".