6996181 has 2 divisors, whose sum is σ = 6996182. Its totient is φ = 6996180.

The previous prime is 6996167. The next prime is 6996191. The reversal of 6996181 is 1816996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5130225 + 1865956 = 2265^2 + 1366^2 .

It is a cyclic number.

It is not a de Polignac number, because 6996181 - 2⁵ = 6996149 is a prime.

It is a super-2 number, since 2×6996181² = 97893097169522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6996191) 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, 3498090 + 3498091.

It is an arithmetic number, because the mean of its divisors is an integer number (3498091).

Almost surely, 2^6996181 is an apocalyptic number.

It is an amenable number.

6996181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6996181 is an equidigital number, since it uses as much as digits as its factorization.

6996181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 40.

The square root of 6996181 is about 2645.0294894386. The cubic root of 6996181 is about 191.2583239289.

The spelling of 6996181 in words is "six million, nine hundred ninety-six thousand, one hundred eighty-one".