91324605 has 32 divisors (see below), whose sum is σ = 157409280. Its totient is φ = 45080640.

The previous prime is 91324603. The next prime is 91324631. The reversal of 91324605 is 50642319.

It is not a de Polignac number, because 91324605 - 2¹ = 91324603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91324603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6426 + ... + 14964.

It is an arithmetic number, because the mean of its divisors is an integer number (4919040).

Almost surely, 2^91324605 is an apocalyptic number.

It is an amenable number.

91324605 is a deficient number, since it is larger than the sum of its proper divisors (66084675).

91324605 is a wasteful number, since it uses less digits than its factorization.

91324605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8601.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 91324605 is about 9556.3907935999. The cubic root of 91324605 is about 450.3283282886.

The spelling of 91324605 in words is "ninety-one million, three hundred twenty-four thousand, six hundred five".