3619643 has 2 divisors, whose sum is σ = 3619644. Its totient is φ = 3619642.

The previous prime is 3619639. The next prime is 3619663. The reversal of 3619643 is 3469163.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (3469163) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3619643 - 2² = 3619639 is a prime.

It is not a weakly prime, because it can be changed into another prime (3619613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1809821 + 1809822.

It is an arithmetic number, because the mean of its divisors is an integer number (1809822).

Almost surely, 2^3619643 is an apocalyptic number.

3619643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3619643 is an equidigital number, since it uses as much as digits as its factorization.

3619643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 32.

The square root of 3619643 is about 1902.5359392138. The cubic root of 3619643 is about 153.5401331681.

The spelling of 3619643 in words is "three million, six hundred nineteen thousand, six hundred forty-three".