868265999 has 2 divisors, whose sum is σ = 868266000. Its totient is φ = 868265998.

The previous prime is 868265989. The next prime is 868266017. The reversal of 868265999 is 999562868.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-868265999 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (868265989) 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, 434132999 + 434133000.

It is an arithmetic number, because the mean of its divisors is an integer number (434133000).

Almost surely, 2^868265999 is an apocalyptic number.

868265999 is a deficient number, since it is larger than the sum of its proper divisors (1).

868265999 is an equidigital number, since it uses as much as digits as its factorization.

868265999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16796160, while the sum is 62.

The square root of 868265999 is about 29466.3536766937. The cubic root of 868265999 is about 954.0056164671.

The spelling of 868265999 in words is "eight hundred sixty-eight million, two hundred sixty-five thousand, nine hundred ninety-nine".