3663963 has 12 divisors (see below), whose sum is σ = 5310448. Its totient is φ = 2434320.

The previous prime is 3663949. The next prime is 3663971. The reversal of 3663963 is 3693663.

It is not a de Polignac number, because 3663963 - 2⁶ = 3663899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3663263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3306 + ... + 4272.

Almost surely, 2^3663963 is an apocalyptic number.

3663963 is a deficient number, since it is larger than the sum of its proper divisors (1646485).

3663963 is a wasteful number, since it uses less digits than its factorization.

3663963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1394 (or 1391 counting only the distinct ones).

The product of its digits is 52488, while the sum is 36.

The square root of 3663963 is about 1914.1481133914. The cubic root of 3663963 is about 154.1642566298.

The spelling of 3663963 in words is "three million, six hundred sixty-three thousand, nine hundred sixty-three".