9301681 has 2 divisors, whose sum is σ = 9301682. Its totient is φ = 9301680.

The previous prime is 9301679. The next prime is 9301687. The reversal of 9301681 is 1861039.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7840000 + 1461681 = 2800^2 + 1209^2 .

It is an emirp because it is prime and its reverse (1861039) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9301681 - 2¹ = 9301679 is a prime.

It is a super-2 number, since 2×9301681² = 173042538851522, which contains 22 as substring.

Together with 9301679, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9301687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4650840 + 4650841.

It is an arithmetic number, because the mean of its divisors is an integer number (4650841).

Almost surely, 2^9301681 is an apocalyptic number.

It is an amenable number.

9301681 is a deficient number, since it is larger than the sum of its proper divisors (1).

9301681 is an equidigital number, since it uses as much as digits as its factorization.

9301681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9301681 is about 3049.8657347496. The cubic root of 9301681 is about 210.3070414071.

The spelling of 9301681 in words is "nine million, three hundred one thousand, six hundred eighty-one".