3684681 has 48 divisors (see below), whose sum is σ = 7163520. Its totient is φ = 1762560.

The previous prime is 3684679. The next prime is 3684683. The reversal of 3684681 is 1864863.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3684679) and next prime (3684683).

It is not a de Polignac number, because 3684681 - 2¹ = 3684679 is a prime.

It is a super-2 number, since 2×3684681² = 27153748143522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3684683) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8805 + ... + 9213.

It is an arithmetic number, because the mean of its divisors is an integer number (149240).

Almost surely, 2^3684681 is an apocalyptic number.

It is an amenable number.

3684681 is a deficient number, since it is larger than the sum of its proper divisors (3478839).

3684681 is a wasteful number, since it uses less digits than its factorization.

3684681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 443 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 3684681 is about 1919.5522915513. The cubic root of 3684681 is about 154.4542862838.

It can be divided in two parts, 36 and 84681, that multiplied together give a square (3048516 = 1746²).

The spelling of 3684681 in words is "three million, six hundred eighty-four thousand, six hundred eighty-one".