4098665 has 12 divisors (see below), whose sum is σ = 5088132. Its totient is φ = 3169440.

The previous prime is 4098659. The next prime is 4098673. The reversal of 4098665 is 5668904.

It can be written as a sum of positive squares in 2 ways, for example, as 753424 + 3345241 = 868^2 + 1829^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4098665 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 11 ways as a sum of consecutive naturals, for example, 4379 + ... + 5231.

It is an arithmetic number, because the mean of its divisors is an integer number (424011).

Almost surely, 2^4098665 is an apocalyptic number.

It is an amenable number.

4098665 is a deficient number, since it is larger than the sum of its proper divisors (989467).

4098665 is an equidigital number, since it uses as much as digits as its factorization.

4098665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 4098665 is about 2024.5159915397. The cubic root of 4098665 is about 160.0346929978.

The spelling of 4098665 in words is "four million, ninety-eight thousand, six hundred sixty-five".