823245560 has 64 divisors (see below), whose sum is σ = 1948907520. Its totient is φ = 312560640.

The previous prime is 823245559. The next prime is 823245581. The reversal of 823245560 is 65542328.

823245560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 823245560.

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, 53897 + ... + 67463.

It is an arithmetic number, because the mean of its divisors is an integer number (30451680).

Almost surely, 2^823245560 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 823245560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974453760).

823245560 is an abundant number, since it is smaller than the sum of its proper divisors (1125661960).

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

823245560 is a wasteful number, since it uses less digits than its factorization.

823245560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13656 (or 13652 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 823245560 is about 28692.2560981182. The cubic root of 823245560 is about 937.2234196856.

Adding to 823245560 its reverse (65542328), we get a palindrome (888787888).

The spelling of 823245560 in words is "eight hundred twenty-three million, two hundred forty-five thousand, five hundred sixty".