3665145 has 32 divisors (see below), whose sum is σ = 6491520. Its totient is φ = 1751040.

The previous prime is 3665141. The next prime is 3665147. The reversal of 3665145 is 5415663.

It is not a de Polignac number, because 3665145 - 2² = 3665141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15891 + ... + 16119.

It is an arithmetic number, because the mean of its divisors is an integer number (202860).

Almost surely, 2^3665145 is an apocalyptic number.

It is an amenable number.

3665145 is a deficient number, since it is larger than the sum of its proper divisors (2826375).

3665145 is a wasteful number, since it uses less digits than its factorization.

3665145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345.

The product of its digits is 10800, while the sum is 30.

The square root of 3665145 is about 1914.4568420312. The cubic root of 3665145 is about 154.1808327215.

The spelling of 3665145 in words is "three million, six hundred sixty-five thousand, one hundred forty-five".