622745 has 8 divisors (see below), whose sum is σ = 760320. Its totient is φ = 489520.

The previous prime is 622729. The next prime is 622751. The reversal of 622745 is 547226.

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

It is not a de Polignac number, because 622745 - 2⁴ = 622729 is a prime.

It is a super-2 number, since 2×622745² = 775622670050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761 + ... + 1350.

It is an arithmetic number, because the mean of its divisors is an integer number (95040).

2⁶²²⁷⁴⁵ is an apocalyptic number.

It is an amenable number.

622745 is a deficient number, since it is larger than the sum of its proper divisors (137575).

622745 is a wasteful number, since it uses less digits than its factorization.

622745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2175.

The product of its digits is 3360, while the sum is 26.

The square root of 622745 is about 789.1419390705. The cubic root of 622745 is about 85.3958468657.

The spelling of 622745 in words is "six hundred twenty-two thousand, seven hundred forty-five".