3661169 has 4 divisors (see below), whose sum is σ = 3711396. Its totient is φ = 3610944.

The previous prime is 3661157. The next prime is 3661181. The reversal of 3661169 is 9611663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9611663 = 19 ⋅505877.

It is an interprime number because it is at equal distance from previous prime (3661157) and next prime (3661181).

It can be written as a sum of positive squares in 2 ways, for example, as 2002225 + 1658944 = 1415^2 + 1288^2 .

It is a cyclic number.

It is not a de Polignac number, because 3661169 - 2⁸ = 3660913 is a prime.

It is a super-2 number, since 2×3661169² = 26808316893122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3661139) 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, 25004 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (927849).

Almost surely, 2^3661169 is an apocalyptic number.

It is an amenable number.

3661169 is a deficient number, since it is larger than the sum of its proper divisors (50227).

3661169 is an equidigital number, since it uses as much as digits as its factorization.

3661169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50226.

The product of its digits is 5832, while the sum is 32.

The square root of 3661169 is about 1913.4181456232. The cubic root of 3661169 is about 154.1250600489.

The spelling of 3661169 in words is "three million, six hundred sixty-one thousand, one hundred sixty-nine".