6517709549 has 8 divisors (see below), whose sum is σ = 7123835040. Its totient is φ = 5926550256.

The previous prime is 6517709467. The next prime is 6517709573. The reversal of 6517709549 is 9459077156.

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 6517709549 - 2²⁰ = 6516660973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6517709549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6517709599) 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, 3740639 + ... + 3742380.

It is an arithmetic number, because the mean of its divisors is an integer number (890479380).

Almost surely, 2^6517709549 is an apocalyptic number.

It is an amenable number.

6517709549 is a deficient number, since it is larger than the sum of its proper divisors (606125491).

6517709549 is a wasteful number, since it uses less digits than its factorization.

6517709549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483099.

The product of its (nonzero) digits is 2381400, while the sum is 53.

The square root of 6517709549 is about 80732.3327360234. The cubic root of 6517709549 is about 1867.9489411806.

The spelling of 6517709549 in words is "six billion, five hundred seventeen million, seven hundred nine thousand, five hundred forty-nine".