3668687 has 4 divisors (see below), whose sum is σ = 4002216. Its totient is φ = 3335160.

The previous prime is 3668671. The next prime is 3668699. The reversal of 3668687 is 7868663.

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 3668687 - 2⁴ = 3668671 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 (3668647) 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, 166748 + ... + 166769.

It is an arithmetic number, because the mean of its divisors is an integer number (1000554).

Almost surely, 2^3668687 is an apocalyptic number.

3668687 is a deficient number, since it is larger than the sum of its proper divisors (333529).

3668687 is a wasteful number, since it uses less digits than its factorization.

3668687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333528.

The product of its digits is 290304, while the sum is 44.

The square root of 3668687 is about 1915.3816852001. The cubic root of 3668687 is about 154.2304835706.

The spelling of 3668687 in words is "three million, six hundred sixty-eight thousand, six hundred eighty-seven".