822064896 has 144 divisors (see below), whose sum is σ = 2537176320. Its totient is φ = 262056960.

The previous prime is 822064879. The next prime is 822064933. The reversal of 822064896 is 698460228.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156391 + ... + 161561.

It is an arithmetic number, because the mean of its divisors is an integer number (17619280).

Almost surely, 2^822064896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 822064896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1268588160).

822064896 is an abundant number, since it is smaller than the sum of its proper divisors (1715111424).

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

822064896 is a wasteful number, since it uses less digits than its factorization.

822064896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219 (or 5199 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 822064896 is about 28671.6741052907. The cubic root of 822064896 is about 936.7751632502.

The spelling of 822064896 in words is "eight hundred twenty-two million, sixty-four thousand, eight hundred ninety-six".