6404628811 has 8 divisors (see below), whose sum is σ = 7323130080. Its totient is φ = 5487016128.

The previous prime is 6404628779. The next prime is 6404628821. The reversal of 6404628811 is 1188264046.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6404628811 - 2⁵ = 6404628779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6404628821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206626 + ... + 235591.

It is an arithmetic number, because the mean of its divisors is an integer number (915391260).

Almost surely, 2^6404628811 is an apocalyptic number.

6404628811 is a deficient number, since it is larger than the sum of its proper divisors (918501269).

6404628811 is a wasteful number, since it uses less digits than its factorization.

6404628811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444293.

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 6404628811 is about 80028.9248397103. The cubic root of 6404628811 is about 1857.0830305250.

The spelling of 6404628811 in words is "six billion, four hundred four million, six hundred twenty-eight thousand, eight hundred eleven".