822045 has 16 divisors (see below), whose sum is σ = 1503360. Its totient is φ = 375744.

The previous prime is 822037. The next prime is 822049. The reversal of 822045 is 540228.

822045 = T₁₉₉ + T₂₀₀ + ... + T₂₃₃.

822045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 822045 - 2³ = 822037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822049) 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, 3810 + ... + 4019.

It is an arithmetic number, because the mean of its divisors is an integer number (93960).

2⁸²²⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

822045 is a deficient number, since it is larger than the sum of its proper divisors (681315).

822045 is a wasteful number, since it uses less digits than its factorization.

822045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 822045 is about 906.6669730392. Note that the first 3 decimals coincide. The cubic root of 822045 is about 93.6767605765.

The spelling of 822045 in words is "eight hundred twenty-two thousand, forty-five".