7286681 has 2 divisors, whose sum is σ = 7286682. Its totient is φ = 7286680.

The previous prime is 7286621. The next prime is 7286683. The reversal of 7286681 is 1866827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6205081 + 1081600 = 2491^2 + 1040^2 .

It is an emirp because it is prime and its reverse (1866827) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7286681 is a prime.

It is a super-2 number, since 2×7286681² = 106191439991522, which contains 22 as substring.

Together with 7286683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7286683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3643340 + 3643341.

It is an arithmetic number, because the mean of its divisors is an integer number (3643341).

Almost surely, 2^7286681 is an apocalyptic number.

It is an amenable number.

7286681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7286681 is an equidigital number, since it uses as much as digits as its factorization.

7286681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 38.

The square root of 7286681 is about 2699.3853003971. The cubic root of 7286681 is about 193.8696914272.

The spelling of 7286681 in words is "seven million, two hundred eighty-six thousand, six hundred eighty-one".