622770 has 16 divisors (see below), whose sum is σ = 1494720. Its totient is φ = 166064.

The previous prime is 622751. The next prime is 622777. The reversal of 622770 is 77226.

It is a self number, because there is not a number n which added to its sum of digits gives 622770.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 622770.

It is not an unprimeable number, because it can be changed into a prime (622777) by changing a digit.

622770 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 10350 + ... + 10409.

It is an arithmetic number, because the mean of its divisors is an integer number (93420).

2⁶²²⁷⁷⁰ is an apocalyptic number.

622770 is an abundant number, since it is smaller than the sum of its proper divisors (871950).

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

622770 is a wasteful number, since it uses less digits than its factorization.

622770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20769.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 622770 is about 789.1577789010. The cubic root of 622770 is about 85.3969895847.

Adding to 622770 its reverse (77226), we get a palindrome (699996).

The spelling of 622770 in words is "six hundred twenty-two thousand, seven hundred seventy".