622605 has 8 divisors (see below), whose sum is σ = 996192. Its totient is φ = 332048.

The previous prime is 622603. The next prime is 622607. The reversal of 622605 is 506226.

It is an interprime number because it is at equal distance from previous prime (622603) and next prime (622607).

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 622605 - 2¹ = 622603 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622603) 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, 20739 + ... + 20768.

It is an arithmetic number, because the mean of its divisors is an integer number (124524).

2⁶²²⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

622605 is a deficient number, since it is larger than the sum of its proper divisors (373587).

622605 is a wasteful number, since it uses less digits than its factorization.

622605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41515.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 622605 is about 789.0532301436. The cubic root of 622605 is about 85.3894470741.

The spelling of 622605 in words is "six hundred twenty-two thousand, six hundred five".