6805220690 has 16 divisors (see below), whose sum is σ = 12894102720. Its totient is φ = 2578820400.

The previous prime is 6805220629. The next prime is 6805220701. The reversal of 6805220690 is 960225086.

It is a super-2 number, since 2×6805220690² = 92622057279208152200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

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 7 ways as a sum of consecutive naturals, for example, 17908286 + ... + 17908665.

It is an arithmetic number, because the mean of its divisors is an integer number (805881420).

Almost surely, 2^6805220690 is an apocalyptic number.

6805220690 is a deficient number, since it is larger than the sum of its proper divisors (6088882030).

6805220690 is a wasteful number, since it uses less digits than its factorization.

6805220690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35816977.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 6805220690 is about 82493.7615217054. The cubic root of 6805220690 is about 1895.0211928764.

The spelling of 6805220690 in words is "six billion, eight hundred five million, two hundred twenty thousand, six hundred ninety".