3866657 has 8 divisors (see below), whose sum is σ = 4031040. Its totient is φ = 3704400.

The previous prime is 3866651. The next prime is 3866713. The reversal of 3866657 is 7566683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3866657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3866651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3938 + ... + 4820.

It is an arithmetic number, because the mean of its divisors is an integer number (503880).

Almost surely, 2^3866657 is an apocalyptic number.

It is an amenable number.

3866657 is a deficient number, since it is larger than the sum of its proper divisors (164383).

3866657 is a wasteful number, since it uses less digits than its factorization.

3866657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1063.

The product of its digits is 181440, while the sum is 41.

The square root of 3866657 is about 1966.3817025186. The cubic root of 3866657 is about 156.9562267246.

The spelling of 3866657 in words is "three million, eight hundred sixty-six thousand, six hundred fifty-seven".