622279 has 4 divisors (see below), whose sum is σ = 711184. Its totient is φ = 533376.

The previous prime is 622277. The next prime is 622301. The reversal of 622279 is 972226.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 622279 - 2¹ = 622277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44442 + ... + 44455.

It is an arithmetic number, because the mean of its divisors is an integer number (177796).

2⁶²²²⁷⁹ is an apocalyptic number.

622279 is a deficient number, since it is larger than the sum of its proper divisors (88905).

622279 is an equidigital number, since it uses as much as digits as its factorization.

622279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88904.

The product of its digits is 3024, while the sum is 28.

The square root of 622279 is about 788.8466264110. The cubic root of 622279 is about 85.3745409835.

The spelling of 622279 in words is "six hundred twenty-two thousand, two hundred seventy-nine".