622400 has 42 divisors (see below), whose sum is σ = 1535430. Its totient is φ = 248320.

The previous prime is 622399. The next prime is 622423. The reversal of 622400 is 4226.

622400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7744 + 614656 = 88^2 + 784^2 .

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, 1406 + ... + 1794.

2⁶²²⁴⁰⁰ 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 622400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767715).

622400 is an abundant number, since it is smaller than the sum of its proper divisors (913030).

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

622400 is a wasteful number, since it uses less digits than its factorization.

622400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 622400 is about 788.9233169326. The cubic root of 622400 is about 85.3800742196.

Adding to 622400 its reverse (4226), we get a palindrome (626626).

The spelling of 622400 in words is "six hundred twenty-two thousand, four hundred".