822945 has 16 divisors (see below), whose sum is σ = 1334592. Its totient is φ = 432960.

The previous prime is 822907. The next prime is 822949. The reversal of 822945 is 549228.

It is not a de Polignac number, because 822945 - 2⁶ = 822881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 915 + ... + 1575.

It is an arithmetic number, because the mean of its divisors is an integer number (83412).

2⁸²²⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

822945 is a deficient number, since it is larger than the sum of its proper divisors (511647).

822945 is a wasteful number, since it uses less digits than its factorization.

822945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its digits is 5760, while the sum is 30.

The square root of 822945 is about 907.1631606277. The cubic root of 822945 is about 93.7109348351.

The spelling of 822945 in words is "eight hundred twenty-two thousand, nine hundred forty-five".