3687831 has 12 divisors (see below), whose sum is σ = 6087952. Its totient is φ = 2107296.

The previous prime is 3687823. The next prime is 3687833. The reversal of 3687831 is 1387863.

3687831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3687831 - 2³ = 3687823 is a prime.

It is a super-2 number, since 2×3687831² = 27200194969122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3687833) 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 11 ways as a sum of consecutive naturals, for example, 29206 + ... + 29331.

Almost surely, 2^3687831 is an apocalyptic number.

3687831 is a deficient number, since it is larger than the sum of its proper divisors (2400121).

3687831 is a wasteful number, since it uses less digits than its factorization.

3687831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58550 (or 58547 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3687831 is about 1920.3726200923. The cubic root of 3687831 is about 154.4982875985.

Subtracting from 3687831 its reverse (1387863), we obtain a cube (2299968 = 132³).

The spelling of 3687831 in words is "three million, six hundred eighty-seven thousand, eight hundred thirty-one".