822384661 has 4 divisors (see below), whose sum is σ = 939868192. Its totient is φ = 704901132.

The previous prime is 822384649. The next prime is 822384671. The reversal of 822384661 is 166483228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 822384661 - 2⁹ = 822384149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (822384671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58741755 + ... + 58741768.

It is an arithmetic number, because the mean of its divisors is an integer number (234967048).

Almost surely, 2^822384661 is an apocalyptic number.

It is an amenable number.

822384661 is a deficient number, since it is larger than the sum of its proper divisors (117483531).

822384661 is a wasteful number, since it uses less digits than its factorization.

822384661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117483530.

The product of its digits is 110592, while the sum is 40.

The square root of 822384661 is about 28677.2498855800. The cubic root of 822384661 is about 936.8966090877.

The spelling of 822384661 in words is "eight hundred twenty-two million, three hundred eighty-four thousand, six hundred sixty-one".