3681111 has 8 divisors (see below), whose sum is σ = 5609344. Its totient is φ = 2103480.

The previous prime is 3681059. The next prime is 3681113. The reversal of 3681111 is 1111863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3681111 - 2⁷ = 3680983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 175291 = 3681111 / (3 + 6 + 8 + 1 + 1 + 1 + 1).

It is a Duffinian number.

3681111 is a modest number, since divided by 1111 gives 368 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87625 + ... + 87666.

It is an arithmetic number, because the mean of its divisors is an integer number (701168).

Almost surely, 2^3681111 is an apocalyptic number.

3681111 is a deficient number, since it is larger than the sum of its proper divisors (1928233).

3681111 is a wasteful number, since it uses less digits than its factorization.

3681111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175301.

The product of its digits is 144, while the sum is 21.

The square root of 3681111 is about 1918.6221618651. The cubic root of 3681111 is about 154.4043878007.

Adding to 3681111 its reverse (1111863), we get a palindrome (4792974).

The spelling of 3681111 in words is "three million, six hundred eighty-one thousand, one hundred eleven".