422623 has 4 divisors (see below), whose sum is σ = 436288. Its totient is φ = 408960.

The previous prime is 422621. The next prime is 422627. The reversal of 422623 is 326224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422623 - 2¹ = 422621 is a prime.

It is a super-2 number, since 2×422623² = 357220400258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6786 + ... + 6847.

It is an arithmetic number, because the mean of its divisors is an integer number (109072).

2⁴²²⁶²³ is an apocalyptic number.

422623 is a deficient number, since it is larger than the sum of its proper divisors (13665).

422623 is a wasteful number, since it uses less digits than its factorization.

422623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13664.

The product of its digits is 576, while the sum is 19.

The square root of 422623 is about 650.0946084994. The cubic root of 422623 is about 75.0442997545.

Adding to 422623 its reverse (326224), we get a palindrome (748847).

The spelling of 422623 in words is "four hundred twenty-two thousand, six hundred twenty-three".