865230973 has 2 divisors, whose sum is σ = 865230974. Its totient is φ = 865230972.

The previous prime is 865230917. The next prime is 865231019. The reversal of 865230973 is 379032568.

865230973 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., 533517604 + 331713369 = 23098^2 + 18213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865230973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (865231973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432615486 + 432615487.

It is an arithmetic number, because the mean of its divisors is an integer number (432615487).

Almost surely, 2^865230973 is an apocalyptic number.

It is an amenable number.

865230973 is a deficient number, since it is larger than the sum of its proper divisors (1).

865230973 is an equidigital number, since it uses as much as digits as its factorization.

865230973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 865230973 is about 29414.8087364171. The cubic root of 865230973 is about 952.8927424234.

The spelling of 865230973 in words is "eight hundred sixty-five million, two hundred thirty thousand, nine hundred seventy-three".