864863801 has 2 divisors, whose sum is σ = 864863802. Its totient is φ = 864863800.

The previous prime is 864863749. The next prime is 864863807. The reversal of 864863801 is 108368468.

864863801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 595116025 + 269747776 = 24395^2 + 16424^2 .

It is a cyclic number.

It is not a de Polignac number, because 864863801 - 2²² = 860669497 is a prime.

It is not a weakly prime, because it can be changed into another prime (864863807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432431900 + 432431901.

It is an arithmetic number, because the mean of its divisors is an integer number (432431901).

Almost surely, 2^864863801 is an apocalyptic number.

It is an amenable number.

864863801 is a deficient number, since it is larger than the sum of its proper divisors (1).

864863801 is an equidigital number, since it uses as much as digits as its factorization.

864863801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 864863801 is about 29408.5667960885. The cubic root of 864863801 is about 952.7579325487.

The spelling of 864863801 in words is "eight hundred sixty-four million, eight hundred sixty-three thousand, eight hundred one".