7317397 has 2 divisors, whose sum is σ = 7317398. Its totient is φ = 7317396.

The previous prime is 7317391. The next prime is 7317407. The reversal of 7317397 is 7937137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5354596 + 1962801 = 2314^2 + 1401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7317397 is a prime.

It is a Chen prime.

7317397 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7317391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3658698 + 3658699.

It is an arithmetic number, because the mean of its divisors is an integer number (3658699).

Almost surely, 2^7317397 is an apocalyptic number.

It is an amenable number.

7317397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7317397 is an equidigital number, since it uses as much as digits as its factorization.

7317397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27783, while the sum is 37.

The square root of 7317397 is about 2705.0687606787. The cubic root of 7317397 is about 194.1417198778.

It can be divided in two parts, 731 and 7397, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 7317397 in words is "seven million, three hundred seventeen thousand, three hundred ninety-seven".