7664341247 has 2 divisors, whose sum is σ = 7664341248. Its totient is φ = 7664341246.

The previous prime is 7664341211. The next prime is 7664341249. The reversal of 7664341247 is 7421434667.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7664341247 - 2¹⁰ = 7664340223 is a prime.

Together with 7664341249, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7664341198 and 7664341207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7664341249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832170623 + 3832170624.

It is an arithmetic number, because the mean of its divisors is an integer number (3832170624).

Almost surely, 2^7664341247 is an apocalyptic number.

7664341247 is a deficient number, since it is larger than the sum of its proper divisors (1).

7664341247 is an equidigital number, since it uses as much as digits as its factorization.

7664341247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 44.

The square root of 7664341247 is about 87546.2234879381. The cubic root of 7664341247 is about 1971.6278510811.

The spelling of 7664341247 in words is "seven billion, six hundred sixty-four million, three hundred forty-one thousand, two hundred forty-seven".