3645279 has 12 divisors (see below), whose sum is σ = 5744232. Its totient is φ = 2209200.

The previous prime is 3645263. The next prime is 3645289. The reversal of 3645279 is 9725463.

3645279 is a `hidden beast` number, since 3 + 645 + 2 + 7 + 9 = 666.

It is not a de Polignac number, because 3645279 - 2⁴ = 3645263 is a prime.

3645279 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18312 + ... + 18509.

It is an arithmetic number, because the mean of its divisors is an integer number (478686).

Almost surely, 2^3645279 is an apocalyptic number.

3645279 is a deficient number, since it is larger than the sum of its proper divisors (2098953).

3645279 is a wasteful number, since it uses less digits than its factorization.

3645279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36838 (or 36835 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 3645279 is about 1909.2613755062. The cubic root of 3645279 is about 153.9017617122.

The spelling of 3645279 in words is "three million, six hundred forty-five thousand, two hundred seventy-nine".