3689687 has 4 divisors (see below), whose sum is σ = 3714600. Its totient is φ = 3664776.

The previous prime is 3689669. The next prime is 3689689. The reversal of 3689687 is 7869863.

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-3689687 is a prime.

It is a super-2 number, since 2×3689687² = 27227580315938, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 3689687 parts by 2716 straight cuts.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689689) 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, 12233 + ... + 12530.

It is an arithmetic number, because the mean of its divisors is an integer number (928650).

Almost surely, 2^3689687 is an apocalyptic number.

3689687 is a deficient number, since it is larger than the sum of its proper divisors (24913).

3689687 is a wasteful number, since it uses less digits than its factorization.

3689687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24912.

The product of its digits is 435456, while the sum is 47.

The square root of 3689687 is about 1920.8557988563. The cubic root of 3689687 is about 154.5242017225.

The spelling of 3689687 in words is "three million, six hundred eighty-nine thousand, six hundred eighty-seven".