8646068831 has 2 divisors, whose sum is σ = 8646068832. Its totient is φ = 8646068830.

The previous prime is 8646068737. The next prime is 8646068833. The reversal of 8646068831 is 1388606468.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8646068831 is a prime.

It is a super-2 number, since 2×8646068831² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 8646068833, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8646068831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8646068833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4323034415 + 4323034416.

It is an arithmetic number, because the mean of its divisors is an integer number (4323034416).

Almost surely, 2^8646068831 is an apocalyptic number.

8646068831 is a deficient number, since it is larger than the sum of its proper divisors (1).

8646068831 is an equidigital number, since it uses as much as digits as its factorization.

8646068831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 8646068831 is about 92984.2396914660. The cubic root of 8646068831 is about 2052.4514659293.

The spelling of 8646068831 in words is "eight billion, six hundred forty-six million, sixty-eight thousand, eight hundred thirty-one".