136005664 has 12 divisors (see below), whose sum is σ = 267761214. Its totient is φ = 68002816.

The previous prime is 136005637. The next prime is 136005671. The reversal of 136005664 is 466500631.

It can be written as a sum of positive squares in only one way, i.e., 114661264 + 21344400 = 10708^2 + 4620^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2125057 + ... + 2125120.

Almost surely, 2^136005664 is an apocalyptic number.

It is an amenable number.

136005664 is a deficient number, since it is larger than the sum of its proper divisors (131755550).

136005664 is an equidigital number, since it uses as much as digits as its factorization.

136005664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4250187 (or 4250179 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 136005664 is about 11662.1466291588. The cubic root of 136005664 is about 514.2634571203.

The spelling of 136005664 in words is "one hundred thirty-six million, five thousand, six hundred sixty-four".