3645065 has 8 divisors (see below), whose sum is σ = 4384968. Its totient is φ = 2908800.

The previous prime is 3645053. The next prime is 3645071. The reversal of 3645065 is 5605463.

It can be written as a sum of positive squares in 4 ways, for example, as 170569 + 3474496 = 413^2 + 1864^2 .

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

It is not a de Polignac number, because 3645065 - 2⁴ = 3645049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 2399 + ... + 3611.

It is an arithmetic number, because the mean of its divisors is an integer number (548121).

Almost surely, 2^3645065 is an apocalyptic number.

It is an amenable number.

3645065 is a deficient number, since it is larger than the sum of its proper divisors (739903).

3645065 is a wasteful number, since it uses less digits than its factorization.

3645065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3645065 is about 1909.2053320688. The cubic root of 3645065 is about 153.8987499974.

The spelling of 3645065 in words is "three million, six hundred forty-five thousand, sixty-five".