7421717 has 2 divisors, whose sum is σ = 7421718. Its totient is φ = 7421716.

The previous prime is 7421693. The next prime is 7421759. The reversal of 7421717 is 7171247.

7421717 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7150276 + 271441 = 2674^2 + 521^2 .

It is a cyclic number.

It is not a de Polignac number, because 7421717 - 2¹² = 7417621 is a prime.

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 7421717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7421797) 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, 3710858 + 3710859.

It is an arithmetic number, because the mean of its divisors is an integer number (3710859).

Almost surely, 2^7421717 is an apocalyptic number.

It is an amenable number.

7421717 is a deficient number, since it is larger than the sum of its proper divisors (1).

7421717 is an equidigital number, since it uses as much as digits as its factorization.

7421717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2744, while the sum is 29.

The square root of 7421717 is about 2724.2828414098. The cubic root of 7421717 is about 195.0599596460.

The spelling of 7421717 in words is "seven million, four hundred twenty-one thousand, seven hundred seventeen".