823667963 has 4 divisors (see below), whose sum is σ = 828269640. Its totient is φ = 819066288.

The previous prime is 823667959. The next prime is 823668007. The reversal of 823667963 is 369766328.

823667963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 823667963 - 2² = 823667959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823667953) 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, 2300570 + ... + 2300927.

It is an arithmetic number, because the mean of its divisors is an integer number (207067410).

Almost surely, 2^823667963 is an apocalyptic number.

823667963 is a deficient number, since it is larger than the sum of its proper divisors (4601677).

823667963 is a wasteful number, since it uses less digits than its factorization.

823667963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601676.

The product of its digits is 1959552, while the sum is 50.

The square root of 823667963 is about 28699.6160775715. The cubic root of 823667963 is about 937.3836870930.

The spelling of 823667963 in words is "eight hundred twenty-three million, six hundred sixty-seven thousand, nine hundred sixty-three".