3684631 has 4 divisors (see below), whose sum is σ = 3901392. Its totient is φ = 3467872.

The previous prime is 3684607. The next prime is 3684641. The reversal of 3684631 is 1364863.

3684631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1364863 = 43 ⋅31741.

It is a cyclic number.

It is not a de Polignac number, because 3684631 - 2¹⁷ = 3553559 is a prime.

It is a super-2 number, since 2×3684631² = 27153011212322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3684593 and 3684602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3684601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108355 + ... + 108388.

It is an arithmetic number, because the mean of its divisors is an integer number (975348).

Almost surely, 2^3684631 is an apocalyptic number.

3684631 is a deficient number, since it is larger than the sum of its proper divisors (216761).

3684631 is a wasteful number, since it uses less digits than its factorization.

3684631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216760.

The product of its digits is 10368, while the sum is 31.

The square root of 3684631 is about 1919.5392676369. The cubic root of 3684631 is about 154.4535876481.

The spelling of 3684631 in words is "three million, six hundred eighty-four thousand, six hundred thirty-one".