800623 has 2 divisors, whose sum is σ = 800624. Its totient is φ = 800622.

The previous prime is 800621. The next prime is 800647. The reversal of 800623 is 326008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 800623 - 2¹ = 800621 is a prime.

Together with 800621, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 800623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (800621) 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 as a sum of consecutive naturals, namely, 400311 + 400312.

It is an arithmetic number, because the mean of its divisors is an integer number (400312).

2⁸⁰⁰⁶²³ is an apocalyptic number.

800623 is a deficient number, since it is larger than the sum of its proper divisors (1).

800623 is an equidigital number, since it uses as much as digits as its factorization.

800623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 800623 is about 894.7753908105. The cubic root of 800623 is about 92.8558680017.

The spelling of 800623 in words is "eight hundred thousand, six hundred twenty-three".