136668530 has 16 divisors (see below), whose sum is σ = 256699584. Its totient is φ = 52290480.

The previous prime is 136668529. The next prime is 136668551. The reversal of 136668530 is 35866631.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296876 + ... + 297335.

It is an arithmetic number, because the mean of its divisors is an integer number (16043724).

Almost surely, 2^136668530 is an apocalyptic number.

136668530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

136668530 is a deficient number, since it is larger than the sum of its proper divisors (120031054).

136668530 is a wasteful number, since it uses less digits than its factorization.

136668530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594241.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 136668530 is about 11690.5316388948. The cubic root of 136668530 is about 515.0975778910.

It can be divided in two parts, 1366 and 68530, that added together give a palindrome (69896).

The spelling of 136668530 in words is "one hundred thirty-six million, six hundred sixty-eight thousand, five hundred thirty".