3640211 has 4 divisors (see below), whose sum is σ = 3647952. Its totient is φ = 3632472.

The previous prime is 3640207. The next prime is 3640223. The reversal of 3640211 is 1120463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120463 = 347 ⋅3229.

It is a cyclic number.

It is not a de Polignac number, because 3640211 - 2² = 3640207 is a prime.

It is a super-2 number, since 2×3640211² = 26502272249042, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3640211.

It is not an unprimeable number, because it can be changed into a prime (3640711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3116 + ... + 4121.

It is an arithmetic number, because the mean of its divisors is an integer number (911988).

Almost surely, 2^3640211 is an apocalyptic number.

3640211 is a deficient number, since it is larger than the sum of its proper divisors (7741).

3640211 is an equidigital number, since it uses as much as digits as its factorization.

3640211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3640211 is about 1907.9336990577. The cubic root of 3640211 is about 153.8304058688.

Adding to 3640211 its reverse (1120463), we get a palindrome (4760674).

The spelling of 3640211 in words is "three million, six hundred forty thousand, two hundred eleven".