621946944 has 112 divisors (see below), whose sum is σ = 1863181440. Its totient is φ = 203374080.

The previous prime is 621946943. The next prime is 621946957. The reversal of 621946944 is 449649126.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 621946944.

It is not an unprimeable number, because it can be changed into a prime (621946943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88189 + ... + 94979.

Almost surely, 2^621946944 is an apocalyptic number.

621946944 is a gapful number since it is divisible by the number (64) 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 621946944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (931590720).

621946944 is an abundant number, since it is smaller than the sum of its proper divisors (1241234496).

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

621946944 is a wasteful number, since it uses less digits than its factorization.

621946944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6849 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 621946944 is about 24938.8641281033. The cubic root of 621946944 is about 853.5935263413.

The spelling of 621946944 in words is "six hundred twenty-one million, nine hundred forty-six thousand, nine hundred forty-four".