3663969 has 8 divisors (see below), whose sum is σ = 5097792. Its totient is φ = 2336400.

The previous prime is 3663949. The next prime is 3663971. The reversal of 3663969 is 9693663.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3663969 - 2¹⁷ = 3532897 is a prime.

It is a super-2 number, since 2×3663969² = 26849337665922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3663969.

It is not an unprimeable number, because it can be changed into a prime (3663929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26482 + ... + 26619.

It is an arithmetic number, because the mean of its divisors is an integer number (637224).

Almost surely, 2^3663969 is an apocalyptic number.

It is an amenable number.

3663969 is a deficient number, since it is larger than the sum of its proper divisors (1433823).

3663969 is a wasteful number, since it uses less digits than its factorization.

3663969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53127.

The product of its digits is 157464, while the sum is 42.

The square root of 3663969 is about 1914.1496806676. The cubic root of 3663969 is about 154.1643407814.

The spelling of 3663969 in words is "three million, six hundred sixty-three thousand, nine hundred sixty-nine".