6636651606 has 48 divisors (see below), whose sum is σ = 15507994320. Its totient is φ = 2039083200.

The previous prime is 6636651601. The next prime is 6636651611. The reversal of 6636651606 is 6061566366.

6636651606 is a `hidden beast` number, since 6 + 6 + 36 + 6 + 5 + 1 + 606 = 666.

It is an interprime number because it is at equal distance from previous prime (6636651601) and next prime (6636651611).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6636651601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143805 + ... + 184263.

It is an arithmetic number, because the mean of its divisors is an integer number (323083215).

Almost surely, 2^6636651606 is an apocalyptic number.

6636651606 is an abundant number, since it is smaller than the sum of its proper divisors (8871342714).

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

6636651606 is a wasteful number, since it uses less digits than its factorization.

6636651606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41181 (or 41178 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The square root of 6636651606 is about 81465.6467843962. The cubic root of 6636651606 is about 1879.2432828629.

The spelling of 6636651606 in words is "six billion, six hundred thirty-six million, six hundred fifty-one thousand, six hundred six".