868505723 has 2 divisors, whose sum is σ = 868505724. Its totient is φ = 868505722.

The previous prime is 868505719. The next prime is 868505749. The reversal of 868505723 is 327505868.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 868505723 - 2² = 868505719 is a prime.

It is not a weakly prime, because it can be changed into another prime (868505023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434252861 + 434252862.

It is an arithmetic number, because the mean of its divisors is an integer number (434252862).

Almost surely, 2^868505723 is an apocalyptic number.

868505723 is a deficient number, since it is larger than the sum of its proper divisors (1).

868505723 is an equidigital number, since it uses as much as digits as its factorization.

868505723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 868505723 is about 29470.4211540996. The cubic root of 868505723 is about 954.0934071512.

The spelling of 868505723 in words is "eight hundred sixty-eight million, five hundred five thousand, seven hundred twenty-three".