3686607 has 8 divisors (see below), whose sum is σ = 5461680. Its totient is φ = 2457720.

The previous prime is 3686591. The next prime is 3686609. The reversal of 3686607 is 7066863.

It is a happy number.

It is not a de Polignac number, because 3686607 - 2⁴ = 3686591 is a prime.

3686607 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3686609) 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, 68244 + ... + 68297.

It is an arithmetic number, because the mean of its divisors is an integer number (682710).

Almost surely, 2^3686607 is an apocalyptic number.

3686607 is a deficient number, since it is larger than the sum of its proper divisors (1775073).

3686607 is a wasteful number, since it uses less digits than its factorization.

3686607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136550 (or 136544 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 3686607 is about 1920.0539054933. The cubic root of 3686607 is about 154.4811929223.

The spelling of 3686607 in words is "three million, six hundred eighty-six thousand, six hundred seven".