7297681 has 2 divisors, whose sum is σ = 7297682. Its totient is φ = 7297680.

The previous prime is 7297669. The next prime is 7297711. The reversal of 7297681 is 1867927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4910656 + 2387025 = 2216^2 + 1545^2 .

It is an emirp because it is prime and its reverse (1867927) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7297681 - 2⁵ = 7297649 is a prime.

It is a super-2 number, since 2×7297681² = 106512295955522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7297181) 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, 3648840 + 3648841.

It is an arithmetic number, because the mean of its divisors is an integer number (3648841).

Almost surely, 2^7297681 is an apocalyptic number.

It is an amenable number.

7297681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7297681 is an equidigital number, since it uses as much as digits as its factorization.

7297681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 40.

The square root of 7297681 is about 2701.4220329301. The cubic root of 7297681 is about 193.9671978408.

The spelling of 7297681 in words is "seven million, two hundred ninety-seven thousand, six hundred eighty-one".