91066371 has 16 divisors (see below), whose sum is σ = 135692928. Its totient is φ = 53844800.

The previous prime is 91066369. The next prime is 91066397. The reversal of 91066371 is 17366019.

It is a cyclic number.

It is not a de Polignac number, because 91066371 - 2¹ = 91066369 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (91066301) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 32301 + ... + 35006.

It is an arithmetic number, because the mean of its divisors is an integer number (8480808).

Almost surely, 2^91066371 is an apocalyptic number.

91066371 is a deficient number, since it is larger than the sum of its proper divisors (44626557).

91066371 is a wasteful number, since it uses less digits than its factorization.

91066371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67362.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 91066371 is about 9542.8701657311. The cubic root of 91066371 is about 449.9034706530.

The spelling of 91066371 in words is "ninety-one million, sixty-six thousand, three hundred seventy-one".