622653 has 4 divisors (see below), whose sum is σ = 830208. Its totient is φ = 415100.

The previous prime is 622639. The next prime is 622663. The reversal of 622653 is 356226.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 622653 - 2⁴ = 622637 is a prime.

It is a D-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 3 ways as a sum of consecutive naturals, for example, 103773 + ... + 103778.

It is an arithmetic number, because the mean of its divisors is an integer number (207552).

2⁶²²⁶⁵³ is an apocalyptic number.

It is an amenable number.

622653 is a deficient number, since it is larger than the sum of its proper divisors (207555).

622653 is a wasteful number, since it uses less digits than its factorization.

622653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207554.

The product of its digits is 2160, while the sum is 24.

The square root of 622653 is about 789.0836457563. The cubic root of 622653 is about 85.3916413965.

Adding to 622653 its reverse (356226), we get a palindrome (978879).

It can be divided in two parts, 622 and 653, that added together give a triangular number (1275 = T₅₀).

The spelling of 622653 in words is "six hundred twenty-two thousand, six hundred fifty-three".