3643831 has 8 divisors (see below), whose sum is σ = 3897504. Its totient is φ = 3394560.

The previous prime is 3643819. The next prime is 3643841. The reversal of 3643831 is 1383463.

3643831 is nontrivially palindromic in base 4.

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

It is not a de Polignac number, because 3643831 - 2⁵ = 3643799 is a prime.

It is a super-2 number, since 2×3643831² = 26555008713122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3643831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3643811) 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, 711 + ... + 2791.

It is an arithmetic number, because the mean of its divisors is an integer number (487188).

Almost surely, 2^3643831 is an apocalyptic number.

3643831 is a deficient number, since it is larger than the sum of its proper divisors (253673).

3643831 is a wasteful number, since it uses less digits than its factorization.

3643831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201.

The product of its digits is 5184, while the sum is 28.

The square root of 3643831 is about 1908.8821336059. The cubic root of 3643831 is about 153.8813810806.

The spelling of 3643831 in words is "three million, six hundred forty-three thousand, eight hundred thirty-one".