6553420864 has 28 divisors (see below), whose sum is σ = 13072555008. Its totient is φ = 3259548800.

The previous prime is 6553420859. The next prime is 6553420873. The reversal of 6553420864 is 4680243556.

It is a self number, because there is not a number n which added to its sum of digits gives 6553420864.

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, 255832 + ... + 280279.

Almost surely, 2^6553420864 is an apocalyptic number.

6553420864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6553420864 is a deficient number, since it is larger than the sum of its proper divisors (6519134144).

6553420864 is a wasteful number, since it uses less digits than its factorization.

6553420864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536314 (or 536304 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The square root of 6553420864 is about 80953.2016908535. The cubic root of 6553420864 is about 1871.3543016224.

The spelling of 6553420864 in words is "six billion, five hundred fifty-three million, four hundred twenty thousand, eight hundred sixty-four".