6476821892 has 12 divisors (see below), whose sum is σ = 11339520780. Its totient is φ = 3236958816.

The previous prime is 6476821889. The next prime is 6476821903. The reversal of 6476821892 is 2981286746.

It can be written as a sum of positive squares in 2 ways, for example, as 4479089476 + 1997732416 = 66926^2 + 44696^2 .

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, 352967 + ... + 370862.

It is an arithmetic number, because the mean of its divisors is an integer number (944960065).

Almost surely, 2^6476821892 is an apocalyptic number.

It is an amenable number.

6476821892 is a deficient number, since it is larger than the sum of its proper divisors (4862698888).

6476821892 is a wasteful number, since it uses less digits than its factorization.

6476821892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726070 (or 726068 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 6476821892 is about 80478.7045869900. The cubic root of 6476821892 is about 1864.0346660619.

The spelling of 6476821892 in words is "six billion, four hundred seventy-six million, eight hundred twenty-one thousand, eight hundred ninety-two".