6995335981 has 2 divisors, whose sum is σ = 6995335982. Its totient is φ = 6995335980.

The previous prime is 6995335973. The next prime is 6995336021. The reversal of 6995335981 is 1895335996.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5188320900 + 1807015081 = 72030^2 + 42509^2 .

It is a cyclic number.

It is not a de Polignac number, because 6995335981 - 2³ = 6995335973 is a prime.

It is a super-2 number, since 2×6995335981² = 97869450974146464722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6995335901) 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, 3497667990 + 3497667991.

It is an arithmetic number, because the mean of its divisors is an integer number (3497667991).

Almost surely, 2^6995335981 is an apocalyptic number.

It is an amenable number.

6995335981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6995335981 is an equidigital number, since it uses as much as digits as its factorization.

6995335981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7873200, while the sum is 58.

The square root of 6995335981 is about 83638.1251643053. The cubic root of 6995335981 is about 1912.5062337416.

The spelling of 6995335981 in words is "six billion, nine hundred ninety-five million, three hundred thirty-five thousand, nine hundred eighty-one".