6464426886 has 64 divisors (see below), whose sum is σ = 15334617600. Its totient is φ = 2012623200.

The previous prime is 6464426879. The next prime is 6464426929. The reversal of 6464426886 is 6886244646.

6464426886 is a `hidden beast` number, since 6 + 464 + 42 + 68 + 86 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28476 + ... + 117216.

It is an arithmetic number, because the mean of its divisors is an integer number (239603400).

Almost surely, 2^6464426886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6464426886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7667308800).

6464426886 is an abundant number, since it is smaller than the sum of its proper divisors (8870190714).

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

6464426886 is a wasteful number, since it uses less digits than its factorization.

6464426886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88842 (or 88836 counting only the distinct ones).

The product of its digits is 10616832, while the sum is 54.

The square root of 6464426886 is about 80401.6597216749. The cubic root of 6464426886 is about 1862.8448090704.

The spelling of 6464426886 in words is "six billion, four hundred sixty-four million, four hundred twenty-six thousand, eight hundred eighty-six".