91134568 has 16 divisors (see below), whose sum is σ = 195288480. Its totient is φ = 39057648.

The previous prime is 91134557. The next prime is 91134599. The reversal of 91134568 is 86543119.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 813646 + ... + 813757.

It is an arithmetic number, because the mean of its divisors is an integer number (12205530).

Almost surely, 2^91134568 is an apocalyptic number.

It is an amenable number.

91134568 is an abundant number, since it is smaller than the sum of its proper divisors (104153912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91134568 is a wasteful number, since it uses less digits than its factorization.

91134568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627416 (or 1627412 counting only the distinct ones).

The product of its digits is 25920, while the sum is 37.

The square root of 91134568 is about 9546.4426882478. The cubic root of 91134568 is about 450.0157492430.

The spelling of 91134568 in words is "ninety-one million, one hundred thirty-four thousand, five hundred sixty-eight".