3821663 has 4 divisors (see below), whose sum is σ = 3850968. Its totient is φ = 3792360.

The previous prime is 3821647. The next prime is 3821669. The reversal of 3821663 is 3661283.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3821663 - 2⁴ = 3821647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14456 + ... + 14717.

It is an arithmetic number, because the mean of its divisors is an integer number (962742).

Almost surely, 2^3821663 is an apocalyptic number.

3821663 is a deficient number, since it is larger than the sum of its proper divisors (29305).

3821663 is a wasteful number, since it uses less digits than its factorization.

3821663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29304.

The product of its digits is 5184, while the sum is 29.

The square root of 3821663 is about 1954.9074146875. The cubic root of 3821663 is about 156.3450476636.

The spelling of 3821663 in words is "three million, eight hundred twenty-one thousand, six hundred sixty-three".