84724647 has 8 divisors (see below), whose sum is σ = 129104256. Its totient is φ = 48414072.

The previous prime is 84724639. The next prime is 84724693. The reversal of 84724647 is 74642748.

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

It is not a de Polignac number, because 84724647 - 2³ = 84724639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84724599 and 84724608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84724697) 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, 2017233 + ... + 2017274.

It is an arithmetic number, because the mean of its divisors is an integer number (16138032).

Almost surely, 2^84724647 is an apocalyptic number.

84724647 is a deficient number, since it is larger than the sum of its proper divisors (44379609).

84724647 is a wasteful number, since it uses less digits than its factorization.

84724647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4034517.

The product of its digits is 301056, while the sum is 42.

The square root of 84724647 is about 9204.5992308193. The cubic root of 84724647 is about 439.2076770550.

The spelling of 84724647 in words is "eighty-four million, seven hundred twenty-four thousand, six hundred forty-seven".