622509 has 8 divisors (see below), whose sum is σ = 844320. Its totient is φ = 407856.

The previous prime is 622493. The next prime is 622513. The reversal of 622509 is 905226.

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

It is not a de Polignac number, because 622509 - 2⁴ = 622493 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622519) 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, 1582 + ... + 1935.

It is an arithmetic number, because the mean of its divisors is an integer number (105540).

2⁶²²⁵⁰⁹ is an apocalyptic number.

It is an amenable number.

622509 is a deficient number, since it is larger than the sum of its proper divisors (221811).

622509 is a wasteful number, since it uses less digits than its factorization.

622509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 622509 is about 788.9923954006. The cubic root of 622509 is about 85.3850580911.

The spelling of 622509 in words is "six hundred twenty-two thousand, five hundred nine".