3688831 has 4 divisors (see below), whose sum is σ = 3883000. Its totient is φ = 3494664.

The previous prime is 3688801. The next prime is 3688837. The reversal of 3688831 is 1388863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1388863 = 7 ⋅198409.

It is a cyclic number.

It is not a de Polignac number, because 3688831 - 2⁷ = 3688703 is a prime.

It is a super-2 number, since 2×3688831² = 27214948293122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3688837) 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, 97056 + ... + 97093.

It is an arithmetic number, because the mean of its divisors is an integer number (970750).

Almost surely, 2^3688831 is an apocalyptic number.

3688831 is a deficient number, since it is larger than the sum of its proper divisors (194169).

3688831 is a wasteful number, since it uses less digits than its factorization.

3688831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194168.

The product of its digits is 27648, while the sum is 37.

The square root of 3688831 is about 1920.6329685809. The cubic root of 3688831 is about 154.5122510298.

Subtracting from 3688831 its reverse (1388863), we obtain a cube (2299968 = 132³).

The spelling of 3688831 in words is "three million, six hundred eighty-eight thousand, eight hundred thirty-one".