136880656 has 20 divisors (see below), whose sum is σ = 289316304. Its totient is φ = 62218400.

The previous prime is 136880647. The next prime is 136880657. The reversal of 136880656 is 656088631.

It is not an unprimeable number, because it can be changed into a prime (136880657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388690 + ... + 389041.

Almost surely, 2^136880656 is an apocalyptic number.

136880656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136880656 is an abundant number, since it is smaller than the sum of its proper divisors (152435648).

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

136880656 is a wasteful number, since it uses less digits than its factorization.

136880656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777750 (or 777744 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 136880656 is about 11699.6006769462. The cubic root of 136880656 is about 515.3639379336.

The spelling of 136880656 in words is "one hundred thirty-six million, eight hundred eighty thousand, six hundred fifty-six".