865230901 has 2 divisors, whose sum is σ = 865230902. Its totient is φ = 865230900.

The previous prime is 865230881. The next prime is 865230917. The reversal of 865230901 is 109032568.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 816244900 + 48986001 = 28570^2 + 6999^2 .

It is a cyclic number.

It is not a de Polignac number, because 865230901 - 2⁵ = 865230869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865230701) 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, 432615450 + 432615451.

It is an arithmetic number, because the mean of its divisors is an integer number (432615451).

Almost surely, 2^865230901 is an apocalyptic number.

It is an amenable number.

865230901 is a deficient number, since it is larger than the sum of its proper divisors (1).

865230901 is an equidigital number, since it uses as much as digits as its factorization.

865230901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 865230901 is about 29414.8075125437. The cubic root of 865230901 is about 952.8927159918.

The spelling of 865230901 in words is "eight hundred sixty-five million, two hundred thirty thousand, nine hundred one".