91082866 has 12 divisors (see below), whose sum is σ = 158930478. Its totient is φ = 39035472.

The previous prime is 91082861. The next prime is 91082869. The reversal of 91082866 is 66828019.

It can be written as a sum of positive squares in only one way, i.e., 46580625 + 44502241 = 6825^2 + 6671^2 .

It is not an unprimeable number, because it can be changed into a prime (91082861) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464611 + ... + 464806.

Almost surely, 2^91082866 is an apocalyptic number.

91082866 is a deficient number, since it is larger than the sum of its proper divisors (67847612).

91082866 is a wasteful number, since it uses less digits than its factorization.

91082866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929433 (or 929426 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 91082866 is about 9543.7343844011. The cubic root of 91082866 is about 449.9306329291.

The spelling of 91082866 in words is "ninety-one million, eighty-two thousand, eight hundred sixty-six".