136666652 has 12 divisors (see below), whose sum is σ = 239724576. Its totient is φ = 68173920.

The previous prime is 136666613. The next prime is 136666669. The reversal of 136666652 is 256666631.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37913 + ... + 41360.

It is an arithmetic number, because the mean of its divisors is an integer number (19977048).

Almost surely, 2^136666652 is an apocalyptic number.

It is an amenable number.

136666652 is a deficient number, since it is larger than the sum of its proper divisors (103057924).

136666652 is a wasteful number, since it uses less digits than its factorization.

136666652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79708 (or 79706 counting only the distinct ones).

The product of its digits is 233280, while the sum is 41.

The square root of 136666652 is about 11690.4513172076. The cubic root of 136666652 is about 515.0952185142.

The spelling of 136666652 in words is "one hundred thirty-six million, six hundred sixty-six thousand, six hundred fifty-two".