816023 has 8 divisors (see below), whose sum is σ = 900816. Its totient is φ = 734400.

The previous prime is 816019. The next prime is 816037. The reversal of 816023 is 320618.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 816023 - 2² = 816019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 815986 and 816004.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 816023.

It is not an unprimeable number, because it can be changed into a prime (816043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233 + ... + 1298.

It is an arithmetic number, because the mean of its divisors is an integer number (112602).

2⁸¹⁶⁰²³ is an apocalyptic number.

816023 is a deficient number, since it is larger than the sum of its proper divisors (84793).

816023 is a wasteful number, since it uses less digits than its factorization.

816023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 816023 is about 903.3399138752. The cubic root of 816023 is about 93.4474525291.

Subtracting from 816023 its sum of digits (20), we obtain a triangular number (816003 = T₁₂₇₇).

The spelling of 816023 in words is "eight hundred sixteen thousand, twenty-three".