79647 has 8 divisors (see below), whose sum is σ = 107520. Its totient is φ = 52440.

The previous prime is 79633. The next prime is 79657. The reversal of 79647 is 74697.

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

It is not a de Polignac number, because 79647 - 2⁴ = 79631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322 + ... + 512.

It is an arithmetic number, because the mean of its divisors is an integer number (13440).

2⁷⁹⁶⁴⁷ is an apocalyptic number.

79647 is a deficient number, since it is larger than the sum of its proper divisors (27873).

79647 is a wasteful number, since it uses less digits than its factorization.

79647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333.

The product of its digits is 10584, while the sum is 33.

The square root of 79647 is about 282.2180008433. The cubic root of 79647 is about 43.0252240684.

Subtracting from 79647 its reverse (74697), we obtain a triangular number (4950 = T₉₉).

The spelling of 79647 in words is "seventy-nine thousand, six hundred forty-seven".