6856366820 has 48 divisors (see below), whose sum is σ = 14646139200. Its totient is φ = 2695747200.

The previous prime is 6856366817. The next prime is 6856366831. The reversal of 6856366820 is 286636586.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268571 + ... + 292989.

It is an arithmetic number, because the mean of its divisors is an integer number (305127900).

Almost surely, 2^6856366820 is an apocalyptic number.

It is an amenable number.

6856366820 is an abundant number, since it is smaller than the sum of its proper divisors (7789772380).

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

6856366820 is a wasteful number, since it uses less digits than its factorization.

6856366820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24668 (or 24666 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The square root of 6856366820 is about 82803.1812190812. The cubic root of 6856366820 is about 1899.7568312989.

The spelling of 6856366820 in words is "six billion, eight hundred fifty-six million, three hundred sixty-six thousand, eight hundred twenty".