3866266 has 4 divisors (see below), whose sum is σ = 5799402. Its totient is φ = 1933132.

The previous prime is 3866263. The next prime is 3866281. The reversal of 3866266 is 6626683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6626683 = 7 ⋅946669.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 5041 = 1965^2 + 71^2 .

It is not an unprimeable number, because it can be changed into a prime (3866263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 966565 + ... + 966568.

Almost surely, 2^3866266 is an apocalyptic number.

3866266 is a deficient number, since it is larger than the sum of its proper divisors (1933136).

3866266 is a wasteful number, since it uses less digits than its factorization.

3866266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933135.

The product of its digits is 62208, while the sum is 37.

The square root of 3866266 is about 1966.2822788196. The cubic root of 3866266 is about 156.9509360257.

The spelling of 3866266 in words is "three million, eight hundred sixty-six thousand, two hundred sixty-six".