622655 has 8 divisors (see below), whose sum is σ = 815184. Its totient is φ = 452800.

The previous prime is 622639. The next prime is 622663. The reversal of 622655 is 556226.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 622655 - 2⁴ = 622639 is a prime.

It is a Duffinian number.

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 622655.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5606 + ... + 5715.

It is an arithmetic number, because the mean of its divisors is an integer number (101898).

2⁶²²⁶⁵⁵ is an apocalyptic number.

622655 is a deficient number, since it is larger than the sum of its proper divisors (192529).

622655 is a wasteful number, since it uses less digits than its factorization.

622655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11337.

The product of its digits is 3600, while the sum is 26.

The square root of 622655 is about 789.0849130480. The cubic root of 622655 is about 85.3917328241.

The spelling of 622655 in words is "six hundred twenty-two thousand, six hundred fifty-five".