622788 has 12 divisors (see below), whose sum is σ = 1453200. Its totient is φ = 207592.

The previous prime is 622781. The next prime is 622793. The reversal of 622788 is 887226.

It is a tau number, because it is divible by the number of its divisors (12).

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25938 + ... + 25961.

It is an arithmetic number, because the mean of its divisors is an integer number (121100).

2⁶²²⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

622788 is an abundant number, since it is smaller than the sum of its proper divisors (830412).

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

622788 is a wasteful number, since it uses less digits than its factorization.

622788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51906 (or 51904 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 622788 is about 789.1691833821. The cubic root of 622788 is about 85.3978123234.

It can be divided in two parts, 62 and 2788, that added together give a triangular number (2850 = T₇₅).

The spelling of 622788 in words is "six hundred twenty-two thousand, seven hundred eighty-eight".