3631791 has 4 divisors (see below), whose sum is σ = 4842392. Its totient is φ = 2421192.

The previous prime is 3631787. The next prime is 3631799. The reversal of 3631791 is 1971363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1971363 = 3 ⋅657121.

It is not a de Polignac number, because 3631791 - 2² = 3631787 is a prime.

It is a D-number.

It is a Duffinian number.

3631791 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3631799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605296 + ... + 605301.

It is an arithmetic number, because the mean of its divisors is an integer number (1210598).

Almost surely, 2^3631791 is an apocalyptic number.

3631791 is a deficient number, since it is larger than the sum of its proper divisors (1210601).

3631791 is a wasteful number, since it uses less digits than its factorization.

3631791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210600.

The product of its digits is 3402, while the sum is 30.

The square root of 3631791 is about 1905.7258459705. The cubic root of 3631791 is about 153.7117083570.

The spelling of 3631791 in words is "three million, six hundred thirty-one thousand, seven hundred ninety-one".