9257681 has 2 divisors, whose sum is σ = 9257682. Its totient is φ = 9257680.

The previous prime is 9257671. The next prime is 9257683. The reversal of 9257681 is 1867529.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9247681 + 10000 = 3041^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 9257681 - 2¹⁰ = 9256657 is a prime.

It is a super-2 number, since 2×9257681² = 171409314995522, which contains 22 as substring.

Together with 9257683, 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 (9257683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4628840 + 4628841.

It is an arithmetic number, because the mean of its divisors is an integer number (4628841).

Almost surely, 2^9257681 is an apocalyptic number.

It is an amenable number.

9257681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9257681 is an equidigital number, since it uses as much as digits as its factorization.

9257681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 9257681 is about 3042.6437517396. The cubic root of 9257681 is about 209.9749100788.

The spelling of 9257681 in words is "nine million, two hundred fifty-seven thousand, six hundred eighty-one".