621010944 has 84 divisors (see below), whose sum is σ = 1794135096. Its totient is φ = 206979072.

The previous prime is 621010933. The next prime is 621010961. The reversal of 621010944 is 449010126.

It is a super-2 number, since 2×621010944² = 771309185135542272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69517 + ... + 77939.

Almost surely, 2^621010944 is an apocalyptic number.

621010944 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 621010944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897067548).

621010944 is an abundant number, since it is smaller than the sum of its proper divisors (1173124152).

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

621010944 is an equidigital number, since it uses as much as digits as its factorization.

621010944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8455 (or 8428 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 621010944 is about 24920.0911715828. The cubic root of 621010944 is about 853.1651057264.

The spelling of 621010944 in words is "six hundred twenty-one million, ten thousand, nine hundred forty-four".