3660345 has 24 divisors (see below), whose sum is σ = 6833736. Its totient is φ = 1801728.

The previous prime is 3660343. The next prime is 3660347. The reversal of 3660345 is 5430663.

It is an interprime number because it is at equal distance from previous prime (3660343) and next prime (3660347).

It can be written as a sum of positive squares in 4 ways, for example, as 746496 + 2913849 = 864^2 + 1707^2 .

It is not a de Polignac number, because 3660345 - 2¹ = 3660343 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3⁸ + 6⁴ + 6⁸ + 0 + 3⁹ + 4³ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3660343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2544 + ... + 3713.

It is an arithmetic number, because the mean of its divisors is an integer number (284739).

Almost surely, 2^3660345 is an apocalyptic number.

It is an amenable number.

3660345 is a deficient number, since it is larger than the sum of its proper divisors (3173391).

3660345 is a wasteful number, since it uses less digits than its factorization.

3660345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281 (or 6278 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 3660345 is about 1913.2028120406. The cubic root of 3660345 is about 154.1134964765.

It can be divided in two parts, 3660 and 345, that added together give a triangular number (4005 = T₈₉).

The spelling of 3660345 in words is "three million, six hundred sixty thousand, three hundred forty-five".