91965723 has 4 divisors (see below), whose sum is σ = 122620968. Its totient is φ = 61310480.

The previous prime is 91965703. The next prime is 91965737. The reversal of 91965723 is 32756919.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91965723 - 2¹⁴ = 91949339 is a prime.

It is a super-3 number, since 3×91965723³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (91965703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15327618 + ... + 15327623.

It is an arithmetic number, because the mean of its divisors is an integer number (30655242).

Almost surely, 2^91965723 is an apocalyptic number.

91965723 is a deficient number, since it is larger than the sum of its proper divisors (30655245).

91965723 is a wasteful number, since it uses less digits than its factorization.

91965723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30655244.

The product of its digits is 102060, while the sum is 42.

The square root of 91965723 is about 9589.8760680209. The cubic root of 91965723 is about 451.3796718622.

The spelling of 91965723 in words is "ninety-one million, nine hundred sixty-five thousand, seven hundred twenty-three".