823663563 has 8 divisors (see below), whose sum is σ = 1098979728. Its totient is φ = 548728224.

The previous prime is 823663537. The next prime is 823663601. The reversal of 823663563 is 365366328.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 823663563 - 2¹⁴ = 823647179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823663523) 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, 90120 + ... + 98837.

It is an arithmetic number, because the mean of its divisors is an integer number (137372466).

Almost surely, 2^823663563 is an apocalyptic number.

823663563 is a deficient number, since it is larger than the sum of its proper divisors (275316165).

823663563 is a wasteful number, since it uses less digits than its factorization.

823663563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190413.

The product of its digits is 466560, while the sum is 42.

The square root of 823663563 is about 28699.5394213914. The cubic root of 823663563 is about 937.3820179351.

The spelling of 823663563 in words is "eight hundred twenty-three million, six hundred sixty-three thousand, five hundred sixty-three".