3631689 has 8 divisors (see below), whose sum is σ = 5380320. Its totient is φ = 2421108.

The previous prime is 3631637. The next prime is 3631703. The reversal of 3631689 is 9861363.

It is a happy number.

It is not a de Polignac number, because 3631689 - 2⁷ = 3631561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3631609) 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, 67227 + ... + 67280.

It is an arithmetic number, because the mean of its divisors is an integer number (672540).

Almost surely, 2^3631689 is an apocalyptic number.

It is an amenable number.

3631689 is a deficient number, since it is larger than the sum of its proper divisors (1748631).

3631689 is a wasteful number, since it uses less digits than its factorization.

3631689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134516 (or 134510 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 3631689 is about 1905.6990843257. The cubic root of 3631689 is about 153.7102693295.

The spelling of 3631689 in words is "three million, six hundred thirty-one thousand, six hundred eighty-nine".