7671068309 has 2 divisors, whose sum is σ = 7671068310. Its totient is φ = 7671068308.

The previous prime is 7671068299. The next prime is 7671068311. The reversal of 7671068309 is 9038601767.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7642606084 + 28462225 = 87422^2 + 5335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7671068309 is a prime.

Together with 7671068311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7671068329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3835534154 + 3835534155.

It is an arithmetic number, because the mean of its divisors is an integer number (3835534155).

Almost surely, 2^7671068309 is an apocalyptic number.

It is an amenable number.

7671068309 is a deficient number, since it is larger than the sum of its proper divisors (1).

7671068309 is an equidigital number, since it uses as much as digits as its factorization.

7671068309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 7671068309 is about 87584.6351194089. The cubic root of 7671068309 is about 1972.2045209618.

The spelling of 7671068309 in words is "seven billion, six hundred seventy-one million, sixty-eight thousand, three hundred nine".