621896 has 32 divisors (see below), whose sum is σ = 1313280. Its totient is φ = 273600.

The previous prime is 621893. The next prime is 621913. The reversal of 621896 is 698126.

621896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (621893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3161 + ... + 3351.

It is an arithmetic number, because the mean of its divisors is an integer number (41040).

2⁶²¹⁸⁹⁶ 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 621896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656640).

621896 is an abundant number, since it is smaller than the sum of its proper divisors (691384).

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

621896 is a wasteful number, since it uses less digits than its factorization.

621896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 621896 is about 788.6038295621. The cubic root of 621896 is about 85.3570219607.

The spelling of 621896 in words is "six hundred twenty-one thousand, eight hundred ninety-six".