91671366 has 16 divisors (see below), whose sum is σ = 185925888. Its totient is φ = 30126600.

The previous prime is 91671347. The next prime is 91671379. The reversal of 91671366 is 66317619.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107170 + ... + 108021.

It is an arithmetic number, because the mean of its divisors is an integer number (11620368).

Almost surely, 2^91671366 is an apocalyptic number.

91671366 is an abundant number, since it is smaller than the sum of its proper divisors (94254522).

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

91671366 is a wasteful number, since it uses less digits than its factorization.

91671366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215267.

The product of its digits is 40824, while the sum is 39.

The square root of 91671366 is about 9574.5164890975. The cubic root of 91671366 is about 450.8975763923.

The spelling of 91671366 in words is "ninety-one million, six hundred seventy-one thousand, three hundred sixty-six".