3686667 has 4 divisors (see below), whose sum is σ = 4915560. Its totient is φ = 2457776.

The previous prime is 3686663. The next prime is 3686677. The reversal of 3686667 is 7666863.

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 3686667 - 2² = 3686663 is a prime.

It is a D-number.

3686667 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3686663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 614442 + ... + 614447.

It is an arithmetic number, because the mean of its divisors is an integer number (1228890).

Almost surely, 2^3686667 is an apocalyptic number.

3686667 is a deficient number, since it is larger than the sum of its proper divisors (1228893).

3686667 is a wasteful number, since it uses less digits than its factorization.

3686667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228892.

The product of its digits is 217728, while the sum is 42.

The square root of 3686667 is about 1920.0695299910. The cubic root of 3686667 is about 154.4820309849.

The spelling of 3686667 in words is "three million, six hundred eighty-six thousand, six hundred sixty-seven".