6669857996 has 24 divisors (see below), whose sum is σ = 12468239280. Its totient is φ = 3110976512.

The previous prime is 6669857989. The next prime is 6669858007. The reversal of 6669857996 is 6997589666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426326 + ... + 441693.

It is an arithmetic number, because the mean of its divisors is an integer number (519509970).

Almost surely, 2^6669857996 is an apocalyptic number.

It is an amenable number.

6669857996 is a deficient number, since it is larger than the sum of its proper divisors (5798381284).

6669857996 is a wasteful number, since it uses less digits than its factorization.

6669857996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868153 (or 868151 counting only the distinct ones).

The product of its digits is 264539520, while the sum is 71.

The square root of 6669857996 is about 81669.1985757176. The cubic root of 6669857996 is about 1882.3723254428.

The spelling of 6669857996 in words is "six billion, six hundred sixty-nine million, eight hundred fifty-seven thousand, nine hundred ninety-six".