622755 has 32 divisors (see below), whose sum is σ = 1267200. Its totient is φ = 284256.

The previous prime is 622751. The next prime is 622777. The reversal of 622755 is 557226.

It is not a de Polignac number, because 622755 - 2² = 622751 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622755.

It is not an unprimeable number, because it can be changed into a prime (622751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 616 + ... + 1274.

It is an arithmetic number, because the mean of its divisors is an integer number (39600).

2⁶²²⁷⁵⁵ is an apocalyptic number.

622755 is an abundant number, since it is smaller than the sum of its proper divisors (644445).

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

622755 is a wasteful number, since it uses less digits than its factorization.

622755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 674 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 622755 is about 789.1482750409. The cubic root of 622755 is about 85.3963039570.

The spelling of 622755 in words is "six hundred twenty-two thousand, seven hundred fifty-five".