3645285 has 32 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 1648128.

The previous prime is 3645263. The next prime is 3645289. The reversal of 3645285 is 5825463.

It is not a de Polignac number, because 3645285 - 2⁵ = 3645253 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6⁸ + 4⁶ + 5 + 2¹³ + 8 + 5⁹ .

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15529 + ... + 15761.

It is an arithmetic number, because the mean of its divisors is an integer number (210600).

Almost surely, 2^3645285 is an apocalyptic number.

3645285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3645285 is a deficient number, since it is larger than the sum of its proper divisors (3093915).

3645285 is a wasteful number, since it uses less digits than its factorization.

3645285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its digits is 28800, while the sum is 33.

The square root of 3645285 is about 1909.2629467939. The cubic root of 3645285 is about 153.9018461511.

The spelling of 3645285 in words is "three million, six hundred forty-five thousand, two hundred eighty-five".