3663399 has 8 divisors (see below), whose sum is σ = 4935280. Its totient is φ = 2416896.

The previous prime is 3663383. The next prime is 3663419. The reversal of 3663399 is 9933663.

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

It is not a de Polignac number, because 3663399 - 2⁴ = 3663383 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 (3663199) 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, 6004 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (616910).

Almost surely, 2^3663399 is an apocalyptic number.

3663399 is a deficient number, since it is larger than the sum of its proper divisors (1271881).

3663399 is a wasteful number, since it uses less digits than its factorization.

3663399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12689.

The product of its digits is 78732, while the sum is 39.

The square root of 3663399 is about 1914.0007836989. Note that the first 3 decimals coincide. The cubic root of 3663399 is about 154.1563459693.

The spelling of 3663399 in words is "three million, six hundred sixty-three thousand, three hundred ninety-nine".