3581687 has 4 divisors (see below), whose sum is σ = 3649320. Its totient is φ = 3514056.

The previous prime is 3581681. The next prime is 3581689. The reversal of 3581687 is 7861853.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3581687 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 3581687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581681) 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, 33737 + ... + 33842.

It is an arithmetic number, because the mean of its divisors is an integer number (912330).

Almost surely, 2^3581687 is an apocalyptic number.

3581687 is a deficient number, since it is larger than the sum of its proper divisors (67633).

3581687 is an equidigital number, since it uses as much as digits as its factorization.

3581687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67632.

The product of its digits is 40320, while the sum is 38.

The square root of 3581687 is about 1892.5345439384. The cubic root of 3581687 is about 153.0015663331.

The spelling of 3581687 in words is "three million, five hundred eighty-one thousand, six hundred eighty-seven".