91966723 has 8 divisors (see below), whose sum is σ = 94235328. Its totient is φ = 89704104.

The previous prime is 91966717. The next prime is 91966727. The reversal of 91966723 is 32766919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91966723 - 2¹⁷ = 91835651 is a prime.

It is a super-3 number, since 3×91966723³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91966723.

It is not an unprimeable number, because it can be changed into a prime (91966727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54336 + ... + 56002.

It is an arithmetic number, because the mean of its divisors is an integer number (11779416).

Almost surely, 2^91966723 is an apocalyptic number.

91966723 is a deficient number, since it is larger than the sum of its proper divisors (2268605).

91966723 is a wasteful number, since it uses less digits than its factorization.

91966723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its digits is 122472, while the sum is 43.

The square root of 91966723 is about 9589.9282061963. The cubic root of 91966723 is about 451.3813078994.

The spelling of 91966723 in words is "ninety-one million, nine hundred sixty-six thousand, seven hundred twenty-three".