6709517389 has 4 divisors (see below), whose sum is σ = 6710000220. Its totient is φ = 6709034560.

The previous prime is 6709517377. The next prime is 6709517393. The reversal of 6709517389 is 9837159076.

6709517389 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 612562500 + 6096954889 = 24750^2 + 78083^2 .

It is a cyclic number.

It is not a de Polignac number, because 6709517389 - 2⁷ = 6709517261 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 (6709517189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219934 + ... + 248575.

It is an arithmetic number, because the mean of its divisors is an integer number (1677500055).

Almost surely, 2^6709517389 is an apocalyptic number.

It is an amenable number.

6709517389 is a deficient number, since it is larger than the sum of its proper divisors (482831).

6709517389 is a wasteful number, since it uses less digits than its factorization.

6709517389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482830.

The product of its (nonzero) digits is 2857680, while the sum is 55.

The square root of 6709517389 is about 81911.6437937855. The cubic root of 6709517389 is about 1886.0958562610.

The spelling of 6709517389 in words is "six billion, seven hundred nine million, five hundred seventeen thousand, three hundred eighty-nine".