622765 has 24 divisors (see below), whose sum is σ = 895968. Its totient is φ = 411840.

The previous prime is 622751. The next prime is 622777. The reversal of 622765 is 567226.

It is not a de Polignac number, because 622765 - 2⁷ = 622637 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9262 + ... + 9328.

It is an arithmetic number, because the mean of its divisors is an integer number (37332).

2⁶²²⁷⁶⁵ is an apocalyptic number.

622765 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

622765 is a deficient number, since it is larger than the sum of its proper divisors (273203).

622765 is a wasteful number, since it uses less digits than its factorization.

622765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 96 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 622765 is about 789.1546109604. The cubic root of 622765 is about 85.3967610433.

The spelling of 622765 in words is "six hundred twenty-two thousand, seven hundred sixty-five".