822079640 has 32 divisors (see below), whose sum is σ = 1859280480. Its totient is φ = 327124992.

The previous prime is 822079619. The next prime is 822079667. The reversal of 822079640 is 46970228.

It is a junction number, because it is equal to n+sod(n) for n = 822079594 and 822079603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45524 + ... + 60963.

It is an arithmetic number, because the mean of its divisors is an integer number (58102515).

Almost surely, 2^822079640 is an apocalyptic number.

It is an amenable number.

822079640 is an abundant number, since it is smaller than the sum of its proper divisors (1037200840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

822079640 is a wasteful number, since it uses less digits than its factorization.

822079640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106691 (or 106687 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 822079640 is about 28671.9312220157. The cubic root of 822079640 is about 936.7807636720.

The spelling of 822079640 in words is "eight hundred twenty-two million, seventy-nine thousand, six hundred forty".