3643271 has 2 divisors, whose sum is σ = 3643272. Its totient is φ = 3643270.

The previous prime is 3643267. The next prime is 3643291. The reversal of 3643271 is 1723463.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3643271 - 2² = 3643267 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3643271.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3643201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821635 + 1821636.

It is an arithmetic number, because the mean of its divisors is an integer number (1821636).

Almost surely, 2^3643271 is an apocalyptic number.

3643271 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643271 is an equidigital number, since it uses as much as digits as its factorization.

3643271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 26.

The square root of 3643271 is about 1908.7354452621. The cubic root of 3643271 is about 153.8734976205.

The spelling of 3643271 in words is "three million, six hundred forty-three thousand, two hundred seventy-one".