6686562812 has 12 divisors (see below), whose sum is σ = 11729282376. Its totient is φ = 3335339280.

The previous prime is 6686562809. The next prime is 6686562833. The reversal of 6686562812 is 2182656866.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1983638 + ... + 1987005.

It is an arithmetic number, because the mean of its divisors is an integer number (977440198).

Almost surely, 2^6686562812 is an apocalyptic number.

It is an amenable number.

6686562812 is a deficient number, since it is larger than the sum of its proper divisors (5042719564).

6686562812 is a wasteful number, since it uses less digits than its factorization.

6686562812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3971068 (or 3971066 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 50.

The square root of 6686562812 is about 81771.4058335797. The cubic root of 6686562812 is about 1883.9424972269.

The spelling of 6686562812 in words is "six billion, six hundred eighty-six million, five hundred sixty-two thousand, eight hundred twelve".