822506 has 4 divisors (see below), whose sum is σ = 1233762. Its totient is φ = 411252.

The previous prime is 822433. The next prime is 822517. The reversal of 822506 is 605228.

It is a happy number.

822506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 819025 + 3481 = 905^2 + 59^2 .

It is a super-2 number, since 2×822506² = 1353032240072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205625 + ... + 205628.

2⁸²²⁵⁰⁶ is an apocalyptic number.

822506 is a deficient number, since it is larger than the sum of its proper divisors (411256).

822506 is a wasteful number, since it uses less digits than its factorization.

822506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411255.

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

The square root of 822506 is about 906.9211652619. The cubic root of 822506 is about 93.6942685055.

The spelling of 822506 in words is "eight hundred twenty-two thousand, five hundred six".