823804087064 has 32 divisors (see below), whose sum is σ = 1765369552800. Its totient is φ = 353043878400.

The previous prime is 823804087061. The next prime is 823804087079. The reversal of 823804087064 is 460780408328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823804087061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1069664 + ... + 1670864.

It is an arithmetic number, because the mean of its divisors is an integer number (55167798525).

Almost surely, 2^823804087064 is an apocalyptic number.

It is an amenable number.

823804087064 is an abundant number, since it is smaller than the sum of its proper divisors (941565465736).

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

823804087064 is a wasteful number, since it uses less digits than its factorization.

823804087064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625683 (or 625679 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 50.

The spelling of 823804087064 in words is "eight hundred twenty-three billion, eight hundred four million, eighty-seven thousand, sixty-four".