7697993 has 2 divisors, whose sum is σ = 7697994. Its totient is φ = 7697992.

The previous prime is 7697971. The next prime is 7698007. The reversal of 7697993 is 3997967.

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., 7689529 + 8464 = 2773^2 + 92^2 .

It is an emirp because it is prime and its reverse (3997967) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7697993 - 2⁶ = 7697929 is a prime.

It is not a weakly prime, because it can be changed into another prime (7697593) 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, 3848996 + 3848997.

It is an arithmetic number, because the mean of its divisors is an integer number (3848997).

Almost surely, 2^7697993 is an apocalyptic number.

It is an amenable number.

7697993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7697993 is an equidigital number, since it uses as much as digits as its factorization.

7697993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 50.

The square root of 7697993 is about 2774.5257252367. The cubic root of 7697993 is about 197.4509240879.

The spelling of 7697993 in words is "seven million, six hundred ninety-seven thousand, nine hundred ninety-three".