622790 has 48 divisors (see below), whose sum is σ = 1378944. Its totient is φ = 201600.

The previous prime is 622781. The next prime is 622793. The reversal of 622790 is 97226.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622793) by changing a digit.

622790 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 23 ways as a sum of consecutive naturals, for example, 15170 + ... + 15210.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2⁶²²⁷⁹⁰ is an apocalyptic number.

622790 is an abundant number, since it is smaller than the sum of its proper divisors (756154).

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

622790 is a wasteful number, since it uses less digits than its factorization.

622790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 86 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 622790 is about 789.1704505365. The cubic root of 622790 is about 85.3979037378.

The spelling of 622790 in words is "six hundred twenty-two thousand, seven hundred ninety".