136551656 has 8 divisors (see below), whose sum is σ = 256034370. Its totient is φ = 68275824.

The previous prime is 136551647. The next prime is 136551661. The reversal of 136551656 is 656155631.

It can be written as a sum of positive squares in only one way, i.e., 131560900 + 4990756 = 11470^2 + 2234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8534471 + ... + 8534486.

Almost surely, 2^136551656 is an apocalyptic number.

It is an amenable number.

136551656 is a deficient number, since it is larger than the sum of its proper divisors (119482714).

136551656 is a wasteful number, since it uses less digits than its factorization.

136551656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17068963 (or 17068959 counting only the distinct ones).

The product of its digits is 81000, while the sum is 38.

The square root of 136551656 is about 11685.5319091601. The cubic root of 136551656 is about 514.9507050564.

The spelling of 136551656 in words is "one hundred thirty-six million, five hundred fifty-one thousand, six hundred fifty-six".