622812 has 48 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 188160.

The previous prime is 622793. The next prime is 622813. The reversal of 622812 is 218226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622813) 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, 8737 + ... + 8807.

It is an arithmetic number, because the mean of its divisors is an integer number (33264).

2⁶²²⁸¹² 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 622812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798336).

622812 is an abundant number, since it is smaller than the sum of its proper divisors (973860).

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

622812 is a wasteful number, since it uses less digits than its factorization.

622812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 136 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 622812 is about 789.1843891005. The cubic root of 622812 is about 85.3989092837.

The spelling of 622812 in words is "six hundred twenty-two thousand, eight hundred twelve".