7666313 has 2 divisors, whose sum is σ = 7666314. Its totient is φ = 7666312.

The previous prime is 7666279. The next prime is 7666333. The reversal of 7666313 is 3136667.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7661824 + 4489 = 2768^2 + 67^2 .

It is an emirp because it is prime and its reverse (3136667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7666313 - 2⁶ = 7666249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7666313.

It is not a weakly prime, because it can be changed into another prime (7666333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3833156 + 3833157.

It is an arithmetic number, because the mean of its divisors is an integer number (3833157).

Almost surely, 2^7666313 is an apocalyptic number.

It is an amenable number.

7666313 is a deficient number, since it is larger than the sum of its proper divisors (1).

7666313 is an equidigital number, since it uses as much as digits as its factorization.

7666313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 32.

The square root of 7666313 is about 2768.8107555411. The cubic root of 7666313 is about 197.1796912351.

The spelling of 7666313 in words is "seven million, six hundred sixty-six thousand, three hundred thirteen".