6464022420 has 48 divisors (see below), whose sum is σ = 18102950208. Its totient is φ = 1723388160.

The previous prime is 6464022391. The next prime is 6464022427. The reversal of 6464022420 is 242204646.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464022427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 437392 + ... + 451928.

It is an arithmetic number, because the mean of its divisors is an integer number (377144796).

Almost surely, 2^6464022420 is an apocalyptic number.

6464022420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6464022420 is an abundant number, since it is smaller than the sum of its proper divisors (11638927788).

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

6464022420 is a wasteful number, since it uses less digits than its factorization.

6464022420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21960 (or 21958 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 6464022420 is about 80399.1443984325. The cubic root of 6464022420 is about 1862.8059567938.

The spelling of 6464022420 in words is "six billion, four hundred sixty-four million, twenty-two thousand, four hundred twenty".