822623 has 4 divisors (see below), whose sum is σ = 830280. Its totient is φ = 814968.

The previous prime is 822611. The next prime is 822631. The reversal of 822623 is 326228.

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 822623 - 2⁴ = 822607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822673) 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, 3665 + ... + 3882.

It is an arithmetic number, because the mean of its divisors is an integer number (207570).

2⁸²²⁶²³ is an apocalyptic number.

822623 is a deficient number, since it is larger than the sum of its proper divisors (7657).

822623 is a wasteful number, since it uses less digits than its factorization.

822623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656.

The product of its digits is 1152, while the sum is 23.

The square root of 822623 is about 906.9856669209. The cubic root of 822623 is about 93.6987109087.

The spelling of 822623 in words is "eight hundred twenty-two thousand, six hundred twenty-three".