6685353868 has 12 divisors (see below), whose sum is σ = 11700134712. Its totient is φ = 3342458240.

The previous prime is 6685353839. The next prime is 6685353881. The reversal of 6685353868 is 8683535866.

It is a happy number.

It is a super-2 number, since 2×6685353868² = 89387912680765122848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27996 + ... + 118972.

It is an arithmetic number, because the mean of its divisors is an integer number (975011226).

Almost surely, 2^6685353868 is an apocalyptic number.

It is an amenable number.

6685353868 is a deficient number, since it is larger than the sum of its proper divisors (5014780844).

6685353868 is a wasteful number, since it uses less digits than its factorization.

6685353868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109352 (or 109350 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 58.

The square root of 6685353868 is about 81764.0132821280. The cubic root of 6685353868 is about 1883.8289501864.

The spelling of 6685353868 in words is "six billion, six hundred eighty-five million, three hundred fifty-three thousand, eight hundred sixty-eight".