622417 has 4 divisors (see below), whose sum is σ = 630000. Its totient is φ = 614836.

The previous prime is 622399. The next prime is 622423. The reversal of 622417 is 714226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 622417 - 2¹⁹ = 98129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (622477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667 + ... + 3832.

It is an arithmetic number, because the mean of its divisors is an integer number (157500).

2⁶²²⁴¹⁷ is an apocalyptic number.

It is an amenable number.

622417 is a deficient number, since it is larger than the sum of its proper divisors (7583).

622417 is an equidigital number, since it uses as much as digits as its factorization.

622417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582.

The product of its digits is 672, while the sum is 22.

The square root of 622417 is about 788.9340910368. The cubic root of 622417 is about 85.3808515590.

Subtracting 622417 from its reverse (714226), we obtain a square (91809 = 303²).

It can be divided in two parts, 6224 and 17, that added together give a square (6241 = 79²).

The spelling of 622417 in words is "six hundred twenty-two thousand, four hundred seventeen".