4169665 has 4 divisors (see below), whose sum is σ = 5003604. Its totient is φ = 3335728.

The previous prime is 4169663. The next prime is 4169677. The reversal of 4169665 is 5669614.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5669614 = 2 ⋅2834807.

It can be written as a sum of positive squares in 2 ways, for example, as 698896 + 3470769 = 836^2 + 1863^2 .

It is a cyclic number.

It is not a de Polignac number, because 4169665 - 2¹ = 4169663 is a prime.

It is a super-2 number, since 2×4169665² = 34772212424450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4169663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416962 + ... + 416971.

It is an arithmetic number, because the mean of its divisors is an integer number (1250901).

Almost surely, 2^4169665 is an apocalyptic number.

It is an amenable number.

4169665 is a deficient number, since it is larger than the sum of its proper divisors (833939).

4169665 is an equidigital number, since it uses as much as digits as its factorization.

4169665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833938.

The product of its digits is 38880, while the sum is 37.

The square root of 4169665 is about 2041.9757589159. The cubic root of 4169665 is about 160.9534862996.

The spelling of 4169665 in words is "four million, one hundred sixty-nine thousand, six hundred sixty-five".