6471162820 has 24 divisors (see below), whose sum is σ = 13624392600. Its totient is φ = 2581807872.

The previous prime is 6471162781. The next prime is 6471162851. The reversal of 6471162820 is 282611746.

It can be written as a sum of positive squares in 4 ways, for example, as 1884080836 + 4587081984 = 43406^2 + 67728^2 .

It is a super-3 number, since 3×6471162820³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6471162820.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 408105 + ... + 423664.

It is an arithmetic number, because the mean of its divisors is an integer number (567683025).

Almost surely, 2^6471162820 is an apocalyptic number.

It is an amenable number.

6471162820 is an abundant number, since it is smaller than the sum of its proper divisors (7153229780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6471162820 is a wasteful number, since it uses less digits than its factorization.

6471162820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832167 (or 832165 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 6471162820 is about 80443.5380872821. The cubic root of 6471162820 is about 1863.4916126767.

The spelling of 6471162820 in words is "six billion, four hundred seventy-one million, one hundred sixty-two thousand, eight hundred twenty".