822072166 has 4 divisors (see below), whose sum is σ = 1233108252. Its totient is φ = 411036082.

The previous prime is 822072137. The next prime is 822072191. The reversal of 822072166 is 661270228.

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

It is a super-3 number, since 3×822072166³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205518040 + ... + 205518043.

It is an arithmetic number, because the mean of its divisors is an integer number (308277063).

Almost surely, 2^822072166 is an apocalyptic number.

822072166 is a deficient number, since it is larger than the sum of its proper divisors (411036086).

822072166 is a wasteful number, since it uses less digits than its factorization.

822072166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411036085.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 822072166 is about 28671.8008851903. The cubic root of 822072166 is about 936.7779247254. Note that the first 3 decimals are identical.

The spelling of 822072166 in words is "eight hundred twenty-two million, seventy-two thousand, one hundred sixty-six".