6404628812 has 12 divisors (see below), whose sum is σ = 11511022320. Its totient is φ = 3115765296.

The previous prime is 6404628779. The next prime is 6404628821. The reversal of 6404628812 is 2188264046.

It is a self number, because there is not a number n which added to its sum of digits gives 6404628812.

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, 21637112 + ... + 21637407.

It is an arithmetic number, because the mean of its divisors is an integer number (959251860).

Almost surely, 2^6404628812 is an apocalyptic number.

It is an amenable number.

6404628812 is a deficient number, since it is larger than the sum of its proper divisors (5106393508).

6404628812 is a wasteful number, since it uses less digits than its factorization.

6404628812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43274560 (or 43274558 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 41.

The square root of 6404628812 is about 80028.9248459580. The cubic root of 6404628812 is about 1857.0830306216.

The spelling of 6404628812 in words is "six billion, four hundred four million, six hundred twenty-eight thousand, eight hundred twelve".