6975571987 has 2 divisors, whose sum is σ = 6975571988. Its totient is φ = 6975571986.

The previous prime is 6975571943. The next prime is 6975572027. The reversal of 6975571987 is 7891755796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6975571987 - 2¹⁹ = 6975047699 is a prime.

It is not a weakly prime, because it can be changed into another prime (6975571907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3487785993 + 3487785994.

It is an arithmetic number, because the mean of its divisors is an integer number (3487785994).

Almost surely, 2^6975571987 is an apocalyptic number.

6975571987 is a deficient number, since it is larger than the sum of its proper divisors (1).

6975571987 is an equidigital number, since it uses as much as digits as its factorization.

6975571987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33339600, while the sum is 64.

The square root of 6975571987 is about 83519.8897688449. The cubic root of 6975571987 is about 1910.7033936992.

The spelling of 6975571987 in words is "six billion, nine hundred seventy-five million, five hundred seventy-one thousand, nine hundred eighty-seven".