91235663 has 8 divisors (see below), whose sum is σ = 96240000. Its totient is φ = 86251608.

The previous prime is 91235633. The next prime is 91235689. The reversal of 91235663 is 36653219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91235663 - 2¹⁴ = 91219279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91235633) 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 7 ways as a sum of consecutive naturals, for example, 4670 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (12030000).

Almost surely, 2^91235663 is an apocalyptic number.

91235663 is a deficient number, since it is larger than the sum of its proper divisors (5004337).

91235663 is a wasteful number, since it uses less digits than its factorization.

91235663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10141.

The product of its digits is 29160, while the sum is 35.

The square root of 91235663 is about 9551.7361249147. The cubic root of 91235663 is about 450.1820876271.

The spelling of 91235663 in words is "ninety-one million, two hundred thirty-five thousand, six hundred sixty-three".