822848721 has 16 divisors (see below), whose sum is σ = 1127995008. Its totient is φ = 533232000.

The previous prime is 822848701. The next prime is 822848729. The reversal of 822848721 is 127848228.

It is not a de Polignac number, because 822848721 - 2²³ = 814460113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (822848729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21996 + ... + 46146.

It is an arithmetic number, because the mean of its divisors is an integer number (70499688).

Almost surely, 2^822848721 is an apocalyptic number.

It is an amenable number.

822848721 is a deficient number, since it is larger than the sum of its proper divisors (305146287).

822848721 is a wasteful number, since it uses less digits than its factorization.

822848721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24472.

The product of its digits is 114688, while the sum is 42.

The square root of 822848721 is about 28685.3398271661. The cubic root of 822848721 is about 937.0728017736.

The spelling of 822848721 in words is "eight hundred twenty-two million, eight hundred forty-eight thousand, seven hundred twenty-one".