622784 has 28 divisors (see below), whose sum is σ = 1274064. Its totient is φ = 301824.

The previous prime is 622781. The next prime is 622793. The reversal of 622784 is 487226.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622784.

It is not an unprimeable number, because it can be changed into a prime (622781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2237 + ... + 2499.

2⁶²²⁷⁸⁴ is an apocalyptic number.

622784 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 622784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637032).

622784 is an abundant number, since it is smaller than the sum of its proper divisors (651280).

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

622784 is a wasteful number, since it uses less digits than its factorization.

622784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 302 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 622784 is about 789.1666490672. The cubic root of 622784 is about 85.3976294940.

The spelling of 622784 in words is "six hundred twenty-two thousand, seven hundred eighty-four".