6424806520 has 64 divisors (see below), whose sum is σ = 15844947840. Its totient is φ = 2325187200.

The previous prime is 6424806497. The next prime is 6424806539. The reversal of 6424806520 is 256084246.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6424806520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58239 + ... + 127441.

It is an arithmetic number, because the mean of its divisors is an integer number (247577310).

Almost surely, 2^6424806520 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 6424806520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7922473920).

6424806520 is an abundant number, since it is smaller than the sum of its proper divisors (9420141320).

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

6424806520 is a wasteful number, since it uses less digits than its factorization.

6424806520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69436 (or 69432 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 6424806520 is about 80154.8908052403. The cubic root of 6424806520 is about 1859.0312255700.

The spelling of 6424806520 in words is "six billion, four hundred twenty-four million, eight hundred six thousand, five hundred twenty".