91659683 has 2 divisors, whose sum is σ = 91659684. Its totient is φ = 91659682.

The previous prime is 91659593. The next prime is 91659719. The reversal of 91659683 is 38695619.

It is a strong prime.

It is an emirp because it is prime and its reverse (38695619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91659683 - 2¹⁰ = 91658659 is a prime.

It is not a weakly prime, because it can be changed into another prime (91650683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45829841 + 45829842.

It is an arithmetic number, because the mean of its divisors is an integer number (45829842).

Almost surely, 2^91659683 is an apocalyptic number.

91659683 is a deficient number, since it is larger than the sum of its proper divisors (1).

91659683 is an equidigital number, since it uses as much as digits as its factorization.

91659683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 91659683 is about 9573.9063605197. The cubic root of 91659683 is about 450.8784207918.

The spelling of 91659683 in words is "ninety-one million, six hundred fifty-nine thousand, six hundred eighty-three".