3871667 has 4 divisors (see below), whose sum is σ = 3909360. Its totient is φ = 3833976.

The previous prime is 3871663. The next prime is 3871669. The reversal of 3871667 is 7661783.

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

It is a cyclic number.

It is not a de Polignac number, because 3871667 - 2² = 3871663 is a prime.

It is a super-3 number, since 3×3871667³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3871667.

It is not an unprimeable number, because it can be changed into a prime (3871661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18692 + ... + 18897.

It is an arithmetic number, because the mean of its divisors is an integer number (977340).

Almost surely, 2^3871667 is an apocalyptic number.

3871667 is a deficient number, since it is larger than the sum of its proper divisors (37693).

3871667 is a wasteful number, since it uses less digits than its factorization.

3871667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37692.

The product of its digits is 42336, while the sum is 38.

The square root of 3871667 is about 1967.6552035354. The cubic root of 3871667 is about 157.0239864903.

It can be divided in two parts, 38716 and 67, that added together give a palindrome (38783).

The spelling of 3871667 in words is "three million, eight hundred seventy-one thousand, six hundred sixty-seven".