91363 has 4 divisors (see below), whose sum is σ = 92008. Its totient is φ = 90720.

The previous prime is 91331. The next prime is 91367. The reversal of 91363 is 36319.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 91363 - 2⁵ = 91331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (23002).

2⁹¹³⁶³ is an apocalyptic number.

91363 is a deficient number, since it is larger than the sum of its proper divisors (645).

91363 is a wasteful number, since it uses less digits than its factorization.

91363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its digits is 486, while the sum is 22.

The square root of 91363 is about 302.2631304013. The cubic root of 91363 is about 45.0391428967.

It can be divided in two parts, 91 and 363, that multiplied together give a palindrome (33033).

The spelling of 91363 in words is "ninety-one thousand, three hundred sixty-three".