6686985600 has 144 divisors (see below), whose sum is σ = 23860799820. Its totient is φ = 1783188480.

The previous prime is 6686985593. The next prime is 6686985611. The reversal of 6686985600 is 65896866.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 87294 + ... + 144893.

Almost surely, 2^6686985600 is an apocalyptic number.

6686985600 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6686985600 is an abundant number, since it is smaller than the sum of its proper divisors (17173814220).

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

6686985600 is a wasteful number, since it uses less digits than its factorization.

6686985600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232217 (or 232197 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 6686985600 is about 81773.9909751261. The cubic root of 6686985600 is about 1883.9822033019.

The spelling of 6686985600 in words is "six billion, six hundred eighty-six million, nine hundred eighty-five thousand, six hundred".