3881647 has 8 divisors (see below), whose sum is σ = 4839552. Its totient is φ = 3024600.

The previous prime is 3881611. The next prime is 3881659. The reversal of 3881647 is 7461883.

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 a de Polignac number, because none of the positive numbers 2^k-3881647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881147) 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, 25129 + ... + 25282.

It is an arithmetic number, because the mean of its divisors is an integer number (604944).

Almost surely, 2^3881647 is an apocalyptic number.

3881647 is a deficient number, since it is larger than the sum of its proper divisors (957905).

3881647 is a wasteful number, since it uses less digits than its factorization.

3881647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50429.

The product of its digits is 32256, while the sum is 37.

The square root of 3881647 is about 1970.1895847862. The cubic root of 3881647 is about 157.1587910250.

The spelling of 3881647 in words is "three million, eight hundred eighty-one thousand, six hundred forty-seven".