136406646 has 16 divisors (see below), whose sum is σ = 303126000. Its totient is φ = 45468864.

The previous prime is 136406609. The next prime is 136406671. The reversal of 136406646 is 646604631.

136406646 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 0 + 6 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 136406646.

It is a congruent 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, 1262971 + ... + 1263078.

It is an arithmetic number, because the mean of its divisors is an integer number (18945375).

Almost surely, 2^136406646 is an apocalyptic number.

136406646 is an abundant number, since it is smaller than the sum of its proper divisors (166719354).

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

136406646 is a wasteful number, since it uses less digits than its factorization.

136406646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526060 (or 2526054 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 136406646 is about 11679.3255798441. The cubic root of 136406646 is about 514.7683578228.

The spelling of 136406646 in words is "one hundred thirty-six million, four hundred six thousand, six hundred forty-six".