4420665 has 24 divisors (see below), whose sum is σ = 7717320. Its totient is φ = 2340864.

The previous prime is 4420639. The next prime is 4420667. The reversal of 4420665 is 5660244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 535824 + 3884841 = 732^2 + 1971^2 .

It is not a de Polignac number, because 4420665 - 2⁶ = 4420601 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4420667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8431 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (321555).

Almost surely, 2^4420665 is an apocalyptic number.

4420665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4420665 is a deficient number, since it is larger than the sum of its proper divisors (3296655).

4420665 is a wasteful number, since it uses less digits than its factorization.

4420665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 4420665 is about 2102.5377523364. The cubic root of 4420665 is about 164.1203880077.

The spelling of 4420665 in words is "four million, four hundred twenty thousand, six hundred sixty-five".