823873761 has 12 divisors (see below), whose sum is σ = 1234115792. Its totient is φ = 549249012.

The previous prime is 823873753. The next prime is 823873769. The reversal of 823873761 is 167378328.

It is an interprime number because it is at equal distance from previous prime (823873753) and next prime (823873769).

It is not a de Polignac number, because 823873761 - 2³ = 823873753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823873769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1694971 + ... + 1695456.

Almost surely, 2^823873761 is an apocalyptic number.

823873761 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

823873761 is a deficient number, since it is larger than the sum of its proper divisors (410242031).

823873761 is an equidigital number, since it uses as much as digits as its factorization.

823873761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390442 (or 3390430 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 823873761 is about 28703.2012326152. The cubic root of 823873761 is about 937.4617507595.

The spelling of 823873761 in words is "eight hundred twenty-three million, eight hundred seventy-three thousand, seven hundred sixty-one".