3689647 has 8 divisors (see below), whose sum is σ = 3988544. Its totient is φ = 3392928.

The previous prime is 3689633. The next prime is 3689669. The reversal of 3689647 is 7469863.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3689647 - 2⁷ = 3689519 is a prime.

It is a super-2 number, since 2×3689647² = 27226989969218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689617) 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, 5713 + ... + 6325.

It is an arithmetic number, because the mean of its divisors is an integer number (498568).

Almost surely, 2^3689647 is an apocalyptic number.

3689647 is a deficient number, since it is larger than the sum of its proper divisors (298897).

3689647 is a wasteful number, since it uses less digits than its factorization.

3689647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089.

The product of its digits is 217728, while the sum is 43.

The square root of 3689647 is about 1920.8453868024. The cubic root of 3689647 is about 154.5236433201.

The spelling of 3689647 in words is "three million, six hundred eighty-nine thousand, six hundred forty-seven".