863801 has 2 divisors, whose sum is σ = 863802. Its totient is φ = 863800.

The previous prime is 863783. The next prime is 863803. The reversal of 863801 is 108368.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 89401 = 880^2 + 299^2 .

It is a cyclic number.

It is not a de Polignac number, because 863801 - 2¹⁰ = 862777 is a prime.

Together with 863803, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (863803) 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 as a sum of consecutive naturals, namely, 431900 + 431901.

It is an arithmetic number, because the mean of its divisors is an integer number (431901).

2⁸⁶³⁸⁰¹ is an apocalyptic number.

It is an amenable number.

863801 is a deficient number, since it is larger than the sum of its proper divisors (1).

863801 is an equidigital number, since it uses as much as digits as its factorization.

863801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 863801 is about 929.4089519689. The cubic root of 863801 is about 95.2367502231.

The spelling of 863801 in words is "eight hundred sixty-three thousand, eight hundred one".