3866690 has 32 divisors (see below), whose sum is σ = 7499520. Its totient is φ = 1430784.

The previous prime is 3866651. The next prime is 3866713. The reversal of 3866690 is 966683.

It is a happy number.

It is a super-2 number, since 2×3866690² = 29902583112200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8714 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (234360).

Almost surely, 2^3866690 is an apocalyptic number.

3866690 is a deficient number, since it is larger than the sum of its proper divisors (3632830).

3866690 is a wasteful number, since it uses less digits than its factorization.

3866690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 3866690 is about 1966.3900935471. The cubic root of 3866690 is about 156.9566732378.

The spelling of 3866690 in words is "three million, eight hundred sixty-six thousand, six hundred ninety".