823538683 has 4 divisors (see below), whose sum is σ = 898405848. Its totient is φ = 748671520.

The previous prime is 823538657. The next prime is 823538707. The reversal of 823538683 is 386835328.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-823538683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823538383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37433566 + ... + 37433587.

It is an arithmetic number, because the mean of its divisors is an integer number (224601462).

Almost surely, 2^823538683 is an apocalyptic number.

823538683 is a deficient number, since it is larger than the sum of its proper divisors (74867165).

823538683 is a wasteful number, since it uses less digits than its factorization.

823538683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74867164.

The product of its digits is 829440, while the sum is 46.

The square root of 823538683 is about 28697.3636942490. The cubic root of 823538683 is about 937.3346417214.

The spelling of 823538683 in words is "eight hundred twenty-three million, five hundred thirty-eight thousand, six hundred eighty-three".