3665161 has 8 divisors (see below), whose sum is σ = 3815424. Its totient is φ = 3516960.

The previous prime is 3665159. The next prime is 3665171. The reversal of 3665161 is 1615663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3665161 - 2¹ = 3665159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3665131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3816 + ... + 4678.

It is an arithmetic number, because the mean of its divisors is an integer number (476928).

Almost surely, 2^3665161 is an apocalyptic number.

3665161 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3665161 is a deficient number, since it is larger than the sum of its proper divisors (150263).

3665161 is a wasteful number, since it uses less digits than its factorization.

3665161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its digits is 3240, while the sum is 28.

The square root of 3665161 is about 1914.4610207575. The cubic root of 3665161 is about 154.1810570773.

The spelling of 3665161 in words is "three million, six hundred sixty-five thousand, one hundred sixty-one".