91411665 has 8 divisors (see below), whose sum is σ = 146258688. Its totient is φ = 48752880.

The previous prime is 91411657. The next prime is 91411667. The reversal of 91411665 is 56611419.

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

It is not a de Polignac number, because 91411665 - 2³ = 91411657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91411667) 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, 3047041 + ... + 3047070.

It is an arithmetic number, because the mean of its divisors is an integer number (18282336).

Almost surely, 2^91411665 is an apocalyptic number.

It is an amenable number.

91411665 is a deficient number, since it is larger than the sum of its proper divisors (54847023).

91411665 is a wasteful number, since it uses less digits than its factorization.

91411665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6094119.

The product of its digits is 6480, while the sum is 33.

The square root of 91411665 is about 9560.9447754916. The cubic root of 91411665 is about 450.4713825896.

The spelling of 91411665 in words is "ninety-one million, four hundred eleven thousand, six hundred sixty-five".