647084147 has 8 divisors (see below), whose sum is σ = 651077232. Its totient is φ = 643104000.

The previous prime is 647084117. The next prime is 647084161. The reversal of 647084147 is 741480746.

647084147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 647084147 - 2²⁰ = 646035571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647084117) 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, 108647 + ... + 114447.

It is an arithmetic number, because the mean of its divisors is an integer number (81384654).

Almost surely, 2^647084147 is an apocalyptic number.

647084147 is a deficient number, since it is larger than the sum of its proper divisors (3993085).

647084147 is a wasteful number, since it uses less digits than its factorization.

647084147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6469.

The product of its (nonzero) digits is 150528, while the sum is 41.

The square root of 647084147 is about 25437.8487101406. The cubic root of 647084147 is about 864.9418683021.

The spelling of 647084147 in words is "six hundred forty-seven million, eighty-four thousand, one hundred forty-seven".