6686704800 has 216 divisors, whose sum is σ = 23639799456. Its totient is φ = 1778526720.

The previous prime is 6686704757. The next prime is 6686704823. The reversal of 6686704800 is 84076866.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3505447 + ... + 3507353.

It is an arithmetic number, because the mean of its divisors is an integer number (109443516).

Almost surely, 2^6686704800 is an apocalyptic number.

6686704800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6686704800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11819899728).

6686704800 is an abundant number, since it is smaller than the sum of its proper divisors (16953094656).

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

6686704800 is a wasteful number, since it uses less digits than its factorization.

6686704800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2420 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 6686704800 is about 81772.2740297712. The cubic root of 6686704800 is about 1883.9558321965.

The spelling of 6686704800 in words is "six billion, six hundred eighty-six million, seven hundred four thousand, eight hundred".