10440665 has 4 divisors (see below), whose sum is σ = 12528804. Its totient is φ = 8352528.

The previous prime is 10440641. The next prime is 10440743. The reversal of 10440665 is 56604401.

It is a happy number.

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 6692569 + 3748096 = 2587^2 + 1936^2 .

It is a cyclic number.

It is not a de Polignac number, because 10440665 - 2¹⁰ = 10439641 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1044062 + ... + 1044071.

It is an arithmetic number, because the mean of its divisors is an integer number (3132201).

Almost surely, 2^10440665 is an apocalyptic number.

It is an amenable number.

10440665 is a deficient number, since it is larger than the sum of its proper divisors (2088139).

10440665 is an equidigital number, since it uses as much as digits as its factorization.

10440665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088138.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 10440665 is about 3231.2017888086. The cubic root of 10440665 is about 218.5627033534.

The spelling of 10440665 in words is "ten million, four hundred forty thousand, six hundred sixty-five".