3643245 has 16 divisors (see below), whose sum is σ = 6477120. Its totient is φ = 1942992.

The previous prime is 3643217. The next prime is 3643267. The reversal of 3643245 is 5423463.

It is not a de Polignac number, because 3643245 - 2⁶ = 3643181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13359 + ... + 13628.

It is an arithmetic number, because the mean of its divisors is an integer number (404820).

Almost surely, 2^3643245 is an apocalyptic number.

It is an amenable number.

3643245 is a deficient number, since it is larger than the sum of its proper divisors (2833875).

3643245 is a wasteful number, since it uses less digits than its factorization.

3643245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27001 (or 26995 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 3643245 is about 1908.7286344580. The cubic root of 3643245 is about 153.8731315831.

The spelling of 3643245 in words is "three million, six hundred forty-three thousand, two hundred forty-five".