91659361 has 2 divisors, whose sum is σ = 91659362. Its totient is φ = 91659360.

The previous prime is 91659349. The next prime is 91659413. The reversal of 91659361 is 16395619.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91317136 + 342225 = 9556^2 + 585^2 .

It is a cyclic number.

It is not a de Polignac number, because 91659361 - 2¹³ = 91651169 is a prime.

It is not a weakly prime, because it can be changed into another prime (91659341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45829680 + 45829681.

It is an arithmetic number, because the mean of its divisors is an integer number (45829681).

Almost surely, 2^91659361 is an apocalyptic number.

It is an amenable number.

91659361 is a deficient number, since it is larger than the sum of its proper divisors (1).

91659361 is an equidigital number, since it uses as much as digits as its factorization.

91659361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 40.

The square root of 91659361 is about 9573.8895439628. The cubic root of 91659361 is about 450.8778928133.

The spelling of 91659361 in words is "ninety-one million, six hundred fifty-nine thousand, three hundred sixty-one".