822605 has 16 divisors (see below), whose sum is σ = 1188480. Its totient is φ = 533952.

The previous prime is 822599. The next prime is 822607. The reversal of 822605 is 506228.

822605 = 91² + 92² + ... + 147².

It is a happy number.

822605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 822605 - 2⁴ = 822589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822607) 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, 47 + ... + 1283.

It is an arithmetic number, because the mean of its divisors is an integer number (74280).

2⁸²²⁶⁰⁵ is an apocalyptic number.

It is an amenable number.

822605 is a deficient number, since it is larger than the sum of its proper divisors (365875).

822605 is a wasteful number, since it uses less digits than its factorization.

822605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 822605 is about 906.9757438873. The cubic root of 822605 is about 93.6980274894.

The spelling of 822605 in words is "eight hundred twenty-two thousand, six hundred five".