3663679 has 4 divisors (see below), whose sum is σ = 3668320. Its totient is φ = 3659040.

The previous prime is 3663661. The next prime is 3663689. The reversal of 3663679 is 9763663.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3663679 - 2¹⁹ = 3139391 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 (3663659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 807 + ... + 2824.

It is an arithmetic number, because the mean of its divisors is an integer number (917080).

Almost surely, 2^3663679 is an apocalyptic number.

3663679 is a deficient number, since it is larger than the sum of its proper divisors (4641).

3663679 is a wasteful number, since it uses less digits than its factorization.

3663679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4640.

The product of its digits is 122472, while the sum is 40.

The square root of 3663679 is about 1914.0739275169. The cubic root of 3663679 is about 154.1602733490.

The spelling of 3663679 in words is "three million, six hundred sixty-three thousand, six hundred seventy-nine".