999895697 has 2 divisors, whose sum is σ = 999895698. Its totient is φ = 999895696.

The previous prime is 999895679. The next prime is 999895703. The reversal of 999895697 is 796598999.

999895697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (999895679) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 674129296 + 325766401 = 25964^2 + 18049^2 .

It is a cyclic number.

It is not a de Polignac number, because 999895697 - 2¹⁰ = 999894673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999895697.

It is not a weakly prime, because it can be changed into another prime (999795697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499947848 + 499947849.

It is an arithmetic number, because the mean of its divisors is an integer number (499947849).

Almost surely, 2^999895697 is an apocalyptic number.

It is an amenable number.

999895697 is a deficient number, since it is larger than the sum of its proper divisors (1).

999895697 is an equidigital number, since it uses as much as digits as its factorization.

999895697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 99202320, while the sum is 71.

The square root of 999895697 is about 31621.1273834441. The cubic root of 999895697 is about 999.9652311245.

The spelling of 999895697 in words is "nine hundred ninety-nine million, eight hundred ninety-five thousand, six hundred ninety-seven".