6816320900 has 36 divisors (see below), whose sum is σ = 14808862068. Its totient is φ = 2723312640.

The previous prime is 6816320881. The next prime is 6816320977. The reversal of 6816320900 is 90236186.

It can be written as a sum of positive squares in 6 ways, for example, as 1139602564 + 5676718336 = 33758^2 + 75344^2 .

It is a super-2 number, since 2×6816320900² = 92924461223553620000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45932 + ... + 125468.

Almost surely, 2^6816320900 is an apocalyptic number.

It is an amenable number.

6816320900 is an abundant number, since it is smaller than the sum of its proper divisors (7992541168).

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

6816320900 is a wasteful number, since it uses less digits than its factorization.

6816320900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80408 (or 80401 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 6816320900 is about 82561.0131963023. The cubic root of 6816320900 is about 1896.0509761111.

The spelling of 6816320900 in words is "six billion, eight hundred sixteen million, three hundred twenty thousand, nine hundred".