865588481 has 2 divisors, whose sum is σ = 865588482. Its totient is φ = 865588480.

The previous prime is 865588441. The next prime is 865588487. The reversal of 865588481 is 184885568.

865588481 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., 759498481 + 106090000 = 27559^2 + 10300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865588481 is a prime.

It is a super-2 number, since 2×865588481² = 1498486836879774722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (865588487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432794240 + 432794241.

It is an arithmetic number, because the mean of its divisors is an integer number (432794241).

Almost surely, 2^865588481 is an apocalyptic number.

It is an amenable number.

865588481 is a deficient number, since it is larger than the sum of its proper divisors (1).

865588481 is an equidigital number, since it uses as much as digits as its factorization.

865588481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2457600, while the sum is 53.

The square root of 865588481 is about 29420.8851158493. The cubic root of 865588481 is about 953.0239674486.

The spelling of 865588481 in words is "eight hundred sixty-five million, five hundred eighty-eight thousand, four hundred eighty-one".