136664456 has 16 divisors (see below), whose sum is σ = 260071440. Its totient is φ = 67312080.

The previous prime is 136664453. The next prime is 136664491. The reversal of 136664456 is 654466631.

It is not an unprimeable number, because it can be changed into a prime (136664453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126950 + ... + 128021.

It is an arithmetic number, because the mean of its divisors is an integer number (16254465).

Almost surely, 2^136664456 is an apocalyptic number.

It is an amenable number.

136664456 is a deficient number, since it is larger than the sum of its proper divisors (123406984).

136664456 is a wasteful number, since it uses less digits than its factorization.

136664456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255044 (or 255040 counting only the distinct ones).

The product of its digits is 311040, while the sum is 41.

The square root of 136664456 is about 11690.3573940235. The cubic root of 136664456 is about 515.0924595989.

The spelling of 136664456 in words is "one hundred thirty-six million, six hundred sixty-four thousand, four hundred fifty-six".