3645343 has 4 divisors (see below), whose sum is σ = 3925768. Its totient is φ = 3364920.

The previous prime is 3645307. The next prime is 3645347. The reversal of 3645343 is 3435463.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3645343 - 2⁹ = 3644831 is a prime.

It is a Duffinian number.

3645343 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140193 + ... + 140218.

It is an arithmetic number, because the mean of its divisors is an integer number (981442).

Almost surely, 2^3645343 is an apocalyptic number.

3645343 is a deficient number, since it is larger than the sum of its proper divisors (280425).

3645343 is a wasteful number, since it uses less digits than its factorization.

3645343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280424.

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

The square root of 3645343 is about 1909.2781358409. The cubic root of 3645343 is about 153.9026623890.

The spelling of 3645343 in words is "three million, six hundred forty-five thousand, three hundred forty-three".