823531568 has 20 divisors (see below), whose sum is σ = 1605760320. Its totient is φ = 409141824.

The previous prime is 823531567. The next prime is 823531601. The reversal of 823531568 is 865135328.

It is not an unprimeable number, because it can be changed into a prime (823531567) 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, 161408 + ... + 166431.

It is an arithmetic number, because the mean of its divisors is an integer number (80288016).

Almost surely, 2^823531568 is an apocalyptic number.

It is an amenable number.

823531568 is a deficient number, since it is larger than the sum of its proper divisors (782228752).

823531568 is a wasteful number, since it uses less digits than its factorization.

823531568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328004 (or 327998 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 823531568 is about 28697.2397278902. The cubic root of 823531568 is about 937.3319423318.

The spelling of 823531568 in words is "eight hundred twenty-three million, five hundred thirty-one thousand, five hundred sixty-eight".