6484479876 has 108 divisors (see below), whose sum is σ = 19264538748. Its totient is φ = 1833560064.

The previous prime is 6484479791. The next prime is 6484479877. The reversal of 6484479876 is 6789744846.

6484479876 is a `hidden beast` number, since 6 + 4 + 84 + 479 + 87 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1051315776 + 5433164100 = 32424^2 + 73710^2 .

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (6484479877) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 152160 + ... + 190056.

Almost surely, 2^6484479876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6484479876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9632269374).

6484479876 is an abundant number, since it is smaller than the sum of its proper divisors (12780058872).

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

6484479876 is a wasteful number, since it uses less digits than its factorization.

6484479876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38018 (or 38006 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 63.

The square root of 6484479876 is about 80526.2682358993. The cubic root of 6484479876 is about 1864.7690347373.

The spelling of 6484479876 in words is "six billion, four hundred eighty-four million, four hundred seventy-nine thousand, eight hundred seventy-six".