822166556 has 24 divisors (see below), whose sum is σ = 1580369280. Its totient is φ = 372514032.

The previous prime is 822166523. The next prime is 822166561. The reversal of 822166556 is 655661228.

It is a super-2 number, since 2×822166556² = 1351915691609802272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233426 + ... + 236921.

It is an arithmetic number, because the mean of its divisors is an integer number (65848720).

Almost surely, 2^822166556 is an apocalyptic number.

It is an amenable number.

822166556 is a deficient number, since it is larger than the sum of its proper divisors (758202724).

822166556 is a wasteful number, since it uses less digits than its factorization.

822166556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470393 (or 470391 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 822166556 is about 28673.4468803456. The cubic root of 822166556 is about 936.8137768431.

The spelling of 822166556 in words is "eight hundred twenty-two million, one hundred sixty-six thousand, five hundred fifty-six".