47647 has 8 divisors (see below), whose sum is σ = 51840. Its totient is φ = 43680.

The previous prime is 47639. The next prime is 47653. The reversal of 47647 is 74674.

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 47647 - 2³ = 47639 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 (47657) 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, 873 + ... + 925.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

2⁴⁷⁶⁴⁷ is an apocalyptic number.

47647 is a deficient number, since it is larger than the sum of its proper divisors (4193).

47647 is a wasteful number, since it uses less digits than its factorization.

47647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113.

The product of its digits is 4704, while the sum is 28.

The square root of 47647 is about 218.2819277906. The cubic root of 47647 is about 36.2531031826.

The spelling of 47647 in words is "forty-seven thousand, six hundred forty-seven".