823995 has 12 divisors (see below), whose sum is σ = 1428336. Its totient is φ = 439440.

The previous prime is 823993. The next prime is 823997. The reversal of 823995 is 599328.

It is an interprime number because it is at equal distance from previous prime (823993) and next prime (823997).

It is not a de Polignac number, because 823995 - 2¹ = 823993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (823993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9111 + ... + 9200.

It is an arithmetic number, because the mean of its divisors is an integer number (119028).

2⁸²³⁹⁹⁵ is an apocalyptic number.

823995 is a deficient number, since it is larger than the sum of its proper divisors (604341).

823995 is a wasteful number, since it uses less digits than its factorization.

823995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18322 (or 18319 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 823995 is about 907.7417033496. The cubic root of 823995 is about 93.7507733270.

The spelling of 823995 in words is "eight hundred twenty-three thousand, nine hundred ninety-five".