3866500 has 96 divisors (see below), whose sum is σ = 9959040. Its totient is φ = 1296000.

The previous prime is 3866479. The next prime is 3866543. The reversal of 3866500 is 56683.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104482 + ... + 104518.

It is an arithmetic number, because the mean of its divisors is an integer number (103740).

Almost surely, 2^3866500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3866500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4979520).

3866500 is an abundant number, since it is smaller than the sum of its proper divisors (6092540).

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

3866500 is a wasteful number, since it uses less digits than its factorization.

3866500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3866500 is about 1966.3417810747. The cubic root of 3866500 is about 156.9541023692.

It can be divided in two parts, 386 and 6500, that added together give a palindrome (6886).

The spelling of 3866500 in words is "three million, eight hundred sixty-six thousand, five hundred".