91348563 has 8 divisors (see below), whose sum is σ = 121852368. Its totient is φ = 60871904.

The previous prime is 91348553. The next prime is 91348577. The reversal of 91348563 is 36584319.

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 91348563 - 2⁴ = 91348547 is a prime.

It is a super-3 number, since 3×91348563³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91348553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3145 + ... + 13877.

It is an arithmetic number, because the mean of its divisors is an integer number (15231546).

Almost surely, 2^91348563 is an apocalyptic number.

91348563 is a deficient number, since it is larger than the sum of its proper divisors (30503805).

91348563 is a wasteful number, since it uses less digits than its factorization.

91348563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13573.

The product of its digits is 77760, while the sum is 39.

The square root of 91348563 is about 9557.6442181115. The cubic root of 91348563 is about 450.3677043975.

The spelling of 91348563 in words is "ninety-one million, three hundred forty-eight thousand, five hundred sixty-three".