3643345 has 8 divisors (see below), whose sum is σ = 4602240. Its totient is φ = 2761200.

The previous prime is 3643331. The next prime is 3643351. The reversal of 3643345 is 5433463.

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

It is not a de Polignac number, because 3643345 - 2⁷ = 3643217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19081 + ... + 19270.

It is an arithmetic number, because the mean of its divisors is an integer number (575280).

Almost surely, 2^3643345 is an apocalyptic number.

It is an amenable number.

3643345 is a deficient number, since it is larger than the sum of its proper divisors (958895).

3643345 is a wasteful number, since it uses less digits than its factorization.

3643345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38375.

The product of its digits is 12960, while the sum is 28.

The square root of 3643345 is about 1908.7548297254. The cubic root of 3643345 is about 153.8745394098.

It can be divided in two parts, 364 and 3345, that multiplied together give a triangular number (1217580 = T₁₅₆₀).

The spelling of 3643345 in words is "three million, six hundred forty-three thousand, three hundred forty-five".