6636601674 has 28 divisors (see below), whose sum is σ = 14925529266. Its totient is φ = 2212200072.

The previous prime is 6636601649. The next prime is 6636601703. The reversal of 6636601674 is 4761066366.

6636601674 is a `hidden beast` number, since 6 + 6 + 36 + 601 + 6 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6408803025 + 227798649 = 80055^2 + 15093^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2274469 + ... + 2277384.

Almost surely, 2^6636601674 is an apocalyptic number.

6636601674 is an abundant number, since it is smaller than the sum of its proper divisors (8288927592).

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

6636601674 is an equidigital number, since it uses as much as digits as its factorization.

6636601674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551873 (or 4551858 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 45.

The square root of 6636601674 is about 81465.3403233547. The cubic root of 6636601674 is about 1879.2385699134.

The spelling of 6636601674 in words is "six billion, six hundred thirty-six million, six hundred one thousand, six hundred seventy-four".