3643513 has 2 divisors, whose sum is σ = 3643514. Its totient is φ = 3643512.

The previous prime is 3643511. The next prime is 3643517. The reversal of 3643513 is 3153463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3504384 + 139129 = 1872^2 + 373^2 .

It is an emirp because it is prime and its reverse (3153463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3643513 - 2¹ = 3643511 is a prime.

Together with 3643511, it forms a pair of twin primes.

3643513 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3643511) 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 as a sum of consecutive naturals, namely, 1821756 + 1821757.

It is an arithmetic number, because the mean of its divisors is an integer number (1821757).

Almost surely, 2^3643513 is an apocalyptic number.

It is an amenable number.

3643513 is a deficient number, since it is larger than the sum of its proper divisors (1).

3643513 is an equidigital number, since it uses as much as digits as its factorization.

3643513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 25.

The square root of 3643513 is about 1908.7988369653. The cubic root of 3643513 is about 153.8769045006.

Adding to 3643513 its reverse (3153463), we get a palindrome (6796976).

The spelling of 3643513 in words is "three million, six hundred forty-three thousand, five hundred thirteen".