6864420544 has 28 divisors (see below), whose sum is σ = 13625254944. Its totient is φ = 3431285504.

The previous prime is 6864420517. The next prime is 6864420559. The reversal of 6864420544 is 4450244686.

It is a self number, because there is not a number n which added to its sum of digits gives 6864420544.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267609 + ... + 292135.

It is an arithmetic number, because the mean of its divisors is an integer number (486616248).

Almost surely, 2^6864420544 is an apocalyptic number.

6864420544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6864420544 is a deficient number, since it is larger than the sum of its proper divisors (6760834400).

6864420544 is a wasteful number, since it uses less digits than its factorization.

6864420544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28912 (or 28902 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 43.

The square root of 6864420544 is about 82851.7986769147. The cubic root of 6864420544 is about 1900.5003801207.

The spelling of 6864420544 in words is "six billion, eight hundred sixty-four million, four hundred twenty thousand, five hundred forty-four".