5639647 has 8 divisors (see below), whose sum is σ = 6119120. Its totient is φ = 5166720.

The previous prime is 5639617. The next prime is 5639693. The reversal of 5639647 is 7469365.

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

It is a de Polignac number, because none of the positive numbers 2^k-5639647 is a prime.

It is a Duffinian number.

5639647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5639617) 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, 247 + ... + 3367.

It is an arithmetic number, because the mean of its divisors is an integer number (764890).

Almost surely, 2^5639647 is an apocalyptic number.

5639647 is a deficient number, since it is larger than the sum of its proper divisors (479473).

5639647 is a wasteful number, since it uses less digits than its factorization.

5639647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273.

The product of its digits is 136080, while the sum is 40.

The square root of 5639647 is about 2374.7940963376. The cubic root of 5639647 is about 177.9988953346.

The spelling of 5639647 in words is "five million, six hundred thirty-nine thousand, six hundred forty-seven".