6820304895 has 20 divisors (see below), whose sum is σ = 12226028760. Its totient is φ = 3637495728.

The previous prime is 6820304891. The next prime is 6820304899. The reversal of 6820304895 is 5984030286.

It is an interprime number because it is at equal distance from previous prime (6820304891) and next prime (6820304899).

It is not a de Polignac number, because 6820304895 - 2² = 6820304891 is a prime.

It is a super-2 number, since 2×6820304895² = 93033117721521922050, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 6820304895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6820304891) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8419725 + ... + 8420534.

It is an arithmetic number, because the mean of its divisors is an integer number (611301438).

Almost surely, 2^6820304895 is an apocalyptic number.

6820304895 is a deficient number, since it is larger than the sum of its proper divisors (5405723865).

6820304895 is a wasteful number, since it uses less digits than its factorization.

6820304895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16840276 (or 16840267 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 6820304895 is about 82585.1372524136. The cubic root of 6820304895 is about 1896.4203046930.

The spelling of 6820304895 in words is "six billion, eight hundred twenty million, three hundred four thousand, eight hundred ninety-five".