136566506 has 16 divisors (see below), whose sum is σ = 206494728. Its totient is φ = 67737600.

The previous prime is 136566503. The next prime is 136566511. The reversal of 136566506 is 605665631.

136566506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 78943225 + 57623281 = 8885^2 + 7591^2 .

It is a super-2 number, since 2×136566506² = 37300821122096072, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136566506.

It is not an unprimeable number, because it can be changed into a prime (136566503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202586 + ... + 203258.

Almost surely, 2^136566506 is an apocalyptic number.

136566506 is a deficient number, since it is larger than the sum of its proper divisors (69928222).

136566506 is a wasteful number, since it uses less digits than its factorization.

136566506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 136566506 is about 11686.1672930007. The cubic root of 136566506 is about 514.9693713522.

The spelling of 136566506 in words is "one hundred thirty-six million, five hundred sixty-six thousand, five hundred six".