4491065 has 4 divisors (see below), whose sum is σ = 5389284. Its totient is φ = 3592848.

The previous prime is 4491037. The next prime is 4491079. The reversal of 4491065 is 5601944.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2229049 + 2262016 = 1493^2 + 1504^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491065 - 2²⁰ = 3442489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449102 + ... + 449111.

It is an arithmetic number, because the mean of its divisors is an integer number (1347321).

Almost surely, 2^4491065 is an apocalyptic number.

It is an amenable number.

4491065 is a deficient number, since it is larger than the sum of its proper divisors (898219).

4491065 is an equidigital number, since it uses as much as digits as its factorization.

4491065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898218.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 4491065 is about 2119.2132974290. The cubic root of 4491065 is about 164.9870207115.

The spelling of 4491065 in words is "four million, four hundred ninety-one thousand, sixty-five".