6547389663 has 8 divisors (see below), whose sum is σ = 8730443776. Its totient is φ = 4364631000.

The previous prime is 6547389643. The next prime is 6547389701. The reversal of 6547389663 is 3669837456.

6547389663 is digitally balanced in base 3, 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 not a de Polignac number, because 6547389663 - 2¹⁶ = 6547324127 is a prime.

It is a super-2 number, since 2×6547389663² = 85736622798318507138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6547389643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15583 + ... + 115488.

It is an arithmetic number, because the mean of its divisors is an integer number (1091305472).

Almost surely, 2^6547389663 is an apocalyptic number.

6547389663 is a deficient number, since it is larger than the sum of its proper divisors (2183054113).

6547389663 is a wasteful number, since it uses less digits than its factorization.

6547389663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147725.

The product of its digits is 19595520, while the sum is 57.

The square root of 6547389663 is about 80915.9419583063. The cubic root of 6547389663 is about 1870.7800479455.

The spelling of 6547389663 in words is "six billion, five hundred forty-seven million, three hundred eighty-nine thousand, six hundred sixty-three".