3866650 has 24 divisors (see below), whose sum is σ = 7616700. Its totient is φ = 1455360.

The previous prime is 3866647. The next prime is 3866651. The reversal of 3866650 is 566683.

It can be written as a sum of positive squares in 6 ways, for example, as 2424249 + 1442401 = 1557^2 + 1201^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1425 + ... + 3124.

Almost surely, 2^3866650 is an apocalyptic number.

3866650 is a deficient number, since it is larger than the sum of its proper divisors (3750050).

3866650 is a wasteful number, since it uses less digits than its factorization.

3866650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4578 (or 4573 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3866650 is about 1966.3799225989. The cubic root of 3866650 is about 156.9561320093.

The spelling of 3866650 in words is "three million, eight hundred sixty-six thousand, six hundred fifty".