3645015 has 16 divisors (see below), whose sum is σ = 6362496. Its totient is φ = 1767200.

The previous prime is 3645013. The next prime is 3645049. The reversal of 3645015 is 5105463.

It is not a de Polignac number, because 3645015 - 2¹ = 3645013 is a prime.

It is a super-2 number, since 2×3645015² = 26572268700450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

3645015 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10881 + ... + 11210.

It is an arithmetic number, because the mean of its divisors is an integer number (397656).

Almost surely, 2^3645015 is an apocalyptic number.

3645015 is a deficient number, since it is larger than the sum of its proper divisors (2717481).

3645015 is a wasteful number, since it uses less digits than its factorization.

3645015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22110.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 3645015 is about 1909.1922375706. The cubic root of 3645015 is about 153.8980463088.

The spelling of 3645015 in words is "three million, six hundred forty-five thousand, fifteen".