669602756808 has 64 divisors (see below), whose sum is σ = 1862307288000. Its totient is φ = 222924963456.

The previous prime is 669602756761. The next prime is 669602756833. The reversal of 669602756808 is 808657206966.

669602756808 is a `hidden beast` number, since 6 + 6 + 9 + 60 + 2 + 7 + 568 + 0 + 8 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1741210 + ... + 2090697.

It is an arithmetic number, because the mean of its divisors is an integer number (29098551375).

Almost surely, 2^669602756808 is an apocalyptic number.

It is an amenable number.

669602756808 is an abundant number, since it is smaller than the sum of its proper divisors (1192704531192).

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

669602756808 is a wasteful number, since it uses less digits than its factorization.

669602756808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3832731 (or 3832721 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 669602756808 in words is "six hundred sixty-nine billion, six hundred two million, seven hundred fifty-six thousand, eight hundred eight".