91066164 has 48 divisors (see below), whose sum is σ = 255628800. Its totient is φ = 24649056.

The previous prime is 91066163. The next prime is 91066169. The reversal of 91066164 is 46166019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91066163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26934 + ... + 30125.

It is an arithmetic number, because the mean of its divisors is an integer number (5325600).

Almost surely, 2^91066164 is an apocalyptic number.

It is an amenable number.

91066164 is an abundant number, since it is smaller than the sum of its proper divisors (164562636).

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

91066164 is a wasteful number, since it uses less digits than its factorization.

91066164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57092 (or 57090 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 91066164 is about 9542.8593199313. The cubic root of 91066164 is about 449.9031297658.

The spelling of 91066164 in words is "ninety-one million, sixty-six thousand, one hundred sixty-four".