868585903 has 2 divisors, whose sum is σ = 868585904. Its totient is φ = 868585902.

The previous prime is 868585849. The next prime is 868585957. The reversal of 868585903 is 309585868.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (868585849) and next prime (868585957).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868585903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868585973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434292951 + 434292952.

It is an arithmetic number, because the mean of its divisors is an integer number (434292952).

Almost surely, 2^868585903 is an apocalyptic number.

868585903 is a deficient number, since it is larger than the sum of its proper divisors (1).

868585903 is an equidigital number, since it uses as much as digits as its factorization.

868585903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 52.

The square root of 868585903 is about 29471.7814697381. The cubic root of 868585903 is about 954.1227667180.

The spelling of 868585903 in words is "eight hundred sixty-eight million, five hundred eighty-five thousand, nine hundred three".