622446864420 has 96 divisors (see below), whose sum is σ = 1805057654400. Its totient is φ = 160074793984.

The previous prime is 622446864397. The next prime is 622446864421. The reversal of 622446864420 is 24468644226.

It is a self number, because there is not a number n which added to its sum of digits gives 622446864420.

It is not an unprimeable number, because it can be changed into a prime (622446864421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1282471 + ... + 1699889.

It is an arithmetic number, because the mean of its divisors is an integer number (18802683900).

Almost surely, 2^622446864420 is an apocalyptic number.

622446864420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 622446864420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (902528827200).

622446864420 is an abundant number, since it is smaller than the sum of its proper divisors (1182610789980).

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

622446864420 is a wasteful number, since it uses less digits than its factorization.

622446864420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418317 (or 418315 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 48.

The spelling of 622446864420 in words is "six hundred twenty-two billion, four hundred forty-six million, eight hundred sixty-four thousand, four hundred twenty".