6865699072 has 18 divisors (see below), whose sum is σ = 13704579518. Its totient is φ = 3432849408.

The previous prime is 6865699063. The next prime is 6865699073. The reversal of 6865699072 is 2709965686.

It can be written as a sum of positive squares in only one way, i.e., 4438757376 + 2426941696 = 66624^2 + 49264^2 .

It is a super-2 number, since 2×6865699072² = 94275647494523322368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6865698998 and 6865699016.

It is not an unprimeable number, because it can be changed into a prime (6865699073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13409313 + ... + 13409824.

Almost surely, 2^6865699072 is an apocalyptic number.

It is an amenable number.

6865699072 is a deficient number, since it is larger than the sum of its proper divisors (6838880446).

6865699072 is an equidigital number, since it uses as much as digits as its factorization.

6865699072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26819153 (or 26819139 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 58.

The square root of 6865699072 is about 82859.5140705037. The cubic root of 6865699072 is about 1900.6183649331.

The spelling of 6865699072 in words is "six billion, eight hundred sixty-five million, six hundred ninety-nine thousand, seventy-two".