3648643 has 2 divisors, whose sum is σ = 3648644. Its totient is φ = 3648642.

The previous prime is 3648587. The next prime is 3648647. The reversal of 3648643 is 3468463.

It is a strong prime.

It is an emirp because it is prime and its reverse (3468463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3648643 - 2⁹ = 3648131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3648599 and 3648608.

It is not a weakly prime, because it can be changed into another prime (3648647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824321 + 1824322.

It is an arithmetic number, because the mean of its divisors is an integer number (1824322).

Almost surely, 2^3648643 is an apocalyptic number.

3648643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3648643 is an equidigital number, since it uses as much as digits as its factorization.

3648643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The square root of 3648643 is about 1910.1421413078. The cubic root of 3648643 is about 153.9490892600.

The spelling of 3648643 in words is "three million, six hundred forty-eight thousand, six hundred forty-three".