821510968 has 8 divisors (see below), whose sum is σ = 1540333080. Its totient is φ = 410755480.

The previous prime is 821510959. The next prime is 821511007. The reversal of 821510968 is 869015128.

821510968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 821510968.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51344428 + ... + 51344443.

It is an arithmetic number, because the mean of its divisors is an integer number (192541635).

Almost surely, 2^821510968 is an apocalyptic number.

It is an amenable number.

821510968 is a deficient number, since it is larger than the sum of its proper divisors (718822112).

821510968 is a wasteful number, since it uses less digits than its factorization.

821510968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102688877 (or 102688873 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 821510968 is about 28662.0126299602. The cubic root of 821510968 is about 936.5647084190.

The spelling of 821510968 in words is "eight hundred twenty-one million, five hundred ten thousand, nine hundred sixty-eight".