3666807 has 12 divisors (see below), whose sum is σ = 5326464. Its totient is φ = 2430720.

The previous prime is 3666797. The next prime is 3666809. The reversal of 3666807 is 7086663.

It is a happy number.

It is not a de Polignac number, because 3666807 - 2⁶ = 3666743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666809) 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 11 ways as a sum of consecutive naturals, for example, 682 + ... + 2792.

It is an arithmetic number, because the mean of its divisors is an integer number (443872).

Almost surely, 2^3666807 is an apocalyptic number.

3666807 is a deficient number, since it is larger than the sum of its proper divisors (1659657).

3666807 is a wasteful number, since it uses less digits than its factorization.

3666807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310 (or 2307 counting only the distinct ones).

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

The square root of 3666807 is about 1914.8908585087. The cubic root of 3666807 is about 154.2041341935.

The spelling of 3666807 in words is "three million, six hundred sixty-six thousand, eight hundred seven".