823801 has 4 divisors (see below), whose sum is σ = 898704. Its totient is φ = 748900.

The previous prime is 823799. The next prime is 823819. The reversal of 823801 is 108328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 823801 - 2¹ = 823799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823831) 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 3 ways as a sum of consecutive naturals, for example, 37435 + ... + 37456.

It is an arithmetic number, because the mean of its divisors is an integer number (224676).

2⁸²³⁸⁰¹ is an apocalyptic number.

It is an amenable number.

823801 is a deficient number, since it is larger than the sum of its proper divisors (74903).

823801 is a wasteful number, since it uses less digits than its factorization.

823801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74902.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 823801 is about 907.6348384675. The cubic root of 823801 is about 93.7434152412.

It can be divided in two parts, 82 and 3801, that added together give a palindrome (3883).

The spelling of 823801 in words is "eight hundred twenty-three thousand, eight hundred one".