622717 has 8 divisors (see below), whose sum is σ = 653400. Its totient is φ = 592704.

The previous prime is 622709. The next prime is 622723. The reversal of 622717 is 717226.

It can be written as a sum of positive squares in 4 ways, for example, as 337561 + 285156 = 581^2 + 534^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 622717 - 2³ = 622709 is a prime.

It is a Duffinian number.

622717 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 622691 and 622700.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3063 + ... + 3259.

It is an arithmetic number, because the mean of its divisors is an integer number (81675).

2⁶²²⁷¹⁷ is an apocalyptic number.

It is an amenable number.

622717 is a deficient number, since it is larger than the sum of its proper divisors (30683).

622717 is a wasteful number, since it uses less digits than its factorization.

622717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its digits is 1176, while the sum is 25.

The square root of 622717 is about 789.1241980829. The cubic root of 622717 is about 85.3945669841.

The spelling of 622717 in words is "six hundred twenty-two thousand, seven hundred seventeen".