3669643 has 2 divisors, whose sum is σ = 3669644. Its totient is φ = 3669642.

The previous prime is 3669613. The next prime is 3669647. The reversal of 3669643 is 3469663.

It is a strong prime.

It is an emirp because it is prime and its reverse (3469663) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3669643 is a prime.

It is not a weakly prime, because it can be changed into another prime (3669647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834821 + 1834822.

It is an arithmetic number, because the mean of its divisors is an integer number (1834822).

Almost surely, 2^3669643 is an apocalyptic number.

3669643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3669643 is an equidigital number, since it uses as much as digits as its factorization.

3669643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 37.

The square root of 3669643 is about 1915.6312275592. The cubic root of 3669643 is about 154.2438790567.

The spelling of 3669643 in words is "three million, six hundred sixty-nine thousand, six hundred forty-three".