91266791 has 24 divisors (see below), whose sum is σ = 115358880. Its totient is φ = 70678080.

The previous prime is 91266757. The next prime is 91266793. The reversal of 91266791 is 19766219.

It is not a de Polignac number, because 91266791 - 2²⁶ = 24157927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91266793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234425 + ... + 234813.

It is an arithmetic number, because the mean of its divisors is an integer number (4806620).

Almost surely, 2^91266791 is an apocalyptic number.

91266791 is a deficient number, since it is larger than the sum of its proper divisors (24092089).

91266791 is a wasteful number, since it uses less digits than its factorization.

91266791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 684 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 91266791 is about 9553.3654279526. The cubic root of 91266791 is about 450.2332798699.

The spelling of 91266791 in words is "ninety-one million, two hundred sixty-six thousand, seven hundred ninety-one".