6985887563 has 2 divisors, whose sum is σ = 6985887564. Its totient is φ = 6985887562.

The previous prime is 6985887473. The next prime is 6985887599. The reversal of 6985887563 is 3657885896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6985887563 - 2¹² = 6985883467 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6985887563.

It is not a weakly prime, because it can be changed into another prime (6985887763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492943781 + 3492943782.

It is an arithmetic number, because the mean of its divisors is an integer number (3492943782).

Almost surely, 2^6985887563 is an apocalyptic number.

6985887563 is a deficient number, since it is larger than the sum of its proper divisors (1).

6985887563 is an equidigital number, since it uses as much as digits as its factorization.

6985887563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87091200, while the sum is 65.

The square root of 6985887563 is about 83581.6221606161. The cubic root of 6985887563 is about 1911.6447883389.

The spelling of 6985887563 in words is "six billion, nine hundred eighty-five million, eight hundred eighty-seven thousand, five hundred sixty-three".