6999287873 has 2 divisors, whose sum is σ = 6999287874. Its totient is φ = 6999287872.

The previous prime is 6999287833. The next prime is 6999287903. The reversal of 6999287873 is 3787829996.

6999287873 is digitally balanced in base 3, 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., 4867434289 + 2131853584 = 69767^2 + 46172^2 .

It is a cyclic number.

It is not a de Polignac number, because 6999287873 - 2¹⁰ = 6999286849 is a prime.

It is not a weakly prime, because it can be changed into another prime (6999287833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499643936 + 3499643937.

It is an arithmetic number, because the mean of its divisors is an integer number (3499643937).

Almost surely, 2^6999287873 is an apocalyptic number.

It is an amenable number.

6999287873 is a deficient number, since it is larger than the sum of its proper divisors (1).

6999287873 is an equidigital number, since it uses as much as digits as its factorization.

6999287873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 68.

The square root of 6999287873 is about 83661.7467723451. The cubic root of 6999287873 is about 1912.8663115275.

The spelling of 6999287873 in words is "six billion, nine hundred ninety-nine million, two hundred eighty-seven thousand, eight hundred seventy-three".