6869642281 has 2 divisors, whose sum is σ = 6869642282. Its totient is φ = 6869642280.

The previous prime is 6869642237. The next prime is 6869642317. The reversal of 6869642281 is 1822469686.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6513942681 + 355699600 = 80709^2 + 18860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6869642281 is a prime.

It is a super-2 number, since 2×6869642281² = 94383970137805765922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6869642201) 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, 3434821140 + 3434821141.

It is an arithmetic number, because the mean of its divisors is an integer number (3434821141).

Almost surely, 2^6869642281 is an apocalyptic number.

It is an amenable number.

6869642281 is a deficient number, since it is larger than the sum of its proper divisors (1).

6869642281 is an equidigital number, since it uses as much as digits as its factorization.

6869642281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 52.

The square root of 6869642281 is about 82883.3052007459. The cubic root of 6869642281 is about 1900.9821589682.

The spelling of 6869642281 in words is "six billion, eight hundred sixty-nine million, six hundred forty-two thousand, two hundred eighty-one".