3866055 has 16 divisors (see below), whose sum is σ = 6549984. Its totient is φ = 1940480.

The previous prime is 3866039. The next prime is 3866081. The reversal of 3866055 is 5506683.

It is not a de Polignac number, because 3866055 - 2⁴ = 3866039 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7326 + ... + 7835.

It is an arithmetic number, because the mean of its divisors is an integer number (409374).

Almost surely, 2^3866055 is an apocalyptic number.

3866055 is a deficient number, since it is larger than the sum of its proper divisors (2683929).

3866055 is a wasteful number, since it uses less digits than its factorization.

3866055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15186.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 3866055 is about 1966.2286235329. The cubic root of 3866055 is about 156.9480807945.

It can be divided in two parts, 386 and 6055, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 3866055 in words is "three million, eight hundred sixty-six thousand, fifty-five".