3866564 has 12 divisors (see below), whose sum is σ = 7287084. Its totient is φ = 1784544.

The previous prime is 3866543. The next prime is 3866581. The reversal of 3866564 is 4656683.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 3496900 = 608^2 + 1870^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37127 + ... + 37230.

It is an arithmetic number, because the mean of its divisors is an integer number (607257).

Almost surely, 2^3866564 is an apocalyptic number.

It is an amenable number.

3866564 is a deficient number, since it is larger than the sum of its proper divisors (3420520).

3866564 is a wasteful number, since it uses less digits than its factorization.

3866564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74374 (or 74372 counting only the distinct ones).

The product of its digits is 103680, while the sum is 38.

The square root of 3866564 is about 1966.3580548822. The cubic root of 3866564 is about 156.9549683554.

The spelling of 3866564 in words is "three million, eight hundred sixty-six thousand, five hundred sixty-four".