3875866 has 4 divisors (see below), whose sum is σ = 5813802. Its totient is φ = 1937932.

The previous prime is 3875827. The next prime is 3875869. The reversal of 3875866 is 6685783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3861225 + 14641 = 1965^2 + 121^2 .

It is not an unprimeable number, because it can be changed into a prime (3875869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968965 + ... + 968968.

Almost surely, 2^3875866 is an apocalyptic number.

3875866 is a deficient number, since it is larger than the sum of its proper divisors (1937936).

3875866 is a wasteful number, since it uses less digits than its factorization.

3875866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937935.

The product of its digits is 241920, while the sum is 43.

The square root of 3875866 is about 1968.7219204347. The cubic root of 3875866 is about 157.0807325465.

The spelling of 3875866 in words is "three million, eight hundred seventy-five thousand, eight hundred sixty-six".