3866526 has 12 divisors (see below), whose sum is σ = 8377512. Its totient is φ = 1288836.

The previous prime is 3866479. The next prime is 3866543. The reversal of 3866526 is 6256683.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 107386 + ... + 107421.

It is an arithmetic number, because the mean of its divisors is an integer number (698126).

Almost surely, 2^3866526 is an apocalyptic number.

3866526 is an abundant number, since it is smaller than the sum of its proper divisors (4510986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3866526 is a wasteful number, since it uses less digits than its factorization.

3866526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214815 (or 214812 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 3866526 is about 1966.3483923252. The cubic root of 3866526 is about 156.9544541772.

It can be divided in two parts, 38 and 66526, that added together give a square (66564 = 258²).

The spelling of 3866526 in words is "three million, eight hundred sixty-six thousand, five hundred twenty-six".