6517506657 has 8 divisors (see below), whose sum is σ = 8901960480. Its totient is φ = 4239028640.

The previous prime is 6517506647. The next prime is 6517506683. The reversal of 6517506657 is 7566057156.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6517506657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6517506647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26493807 + ... + 26494052.

It is an arithmetic number, because the mean of its divisors is an integer number (1112745060).

Almost surely, 2^6517506657 is an apocalyptic number.

It is an amenable number.

6517506657 is a deficient number, since it is larger than the sum of its proper divisors (2384453823).

6517506657 is a wasteful number, since it uses less digits than its factorization.

6517506657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52987903.

The product of its (nonzero) digits is 1323000, while the sum is 48.

The square root of 6517506657 is about 80731.0761541056. The cubic root of 6517506657 is about 1867.9295583066.

The spelling of 6517506657 in words is "six billion, five hundred seventeen million, five hundred six thousand, six hundred fifty-seven".