91276866 has 12 divisors (see below), whose sum is σ = 197766582. Its totient is φ = 30425616.

The previous prime is 91276853. The next prime is 91276877. The reversal of 91276866 is 66867219.

It can be written as a sum of positive squares in only one way, i.e., 72743841 + 18533025 = 8529^2 + 4305^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2535451 + ... + 2535486.

Almost surely, 2^91276866 is an apocalyptic number.

91276866 is an abundant number, since it is smaller than the sum of its proper divisors (106489716).

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

91276866 is a wasteful number, since it uses less digits than its factorization.

91276866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5070945 (or 5070942 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 91276866 is about 9553.8927144908. The cubic root of 91276866 is about 450.2498464412.

The spelling of 91276866 in words is "ninety-one million, two hundred seventy-six thousand, eight hundred sixty-six".