6717457257 has 16 divisors (see below), whose sum is σ = 10681175040. Its totient is φ = 3671653392.

The previous prime is 6717457249. The next prime is 6717457259. The reversal of 6717457257 is 7527547176.

It is not a de Polignac number, because 6717457257 - 2³ = 6717457249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6717457259) 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 15 ways as a sum of consecutive naturals, for example, 6953407 + ... + 6954372.

It is an arithmetic number, because the mean of its divisors is an integer number (667573440).

Almost surely, 2^6717457257 is an apocalyptic number.

It is an amenable number.

6717457257 is a deficient number, since it is larger than the sum of its proper divisors (3963717783).

6717457257 is a wasteful number, since it uses less digits than its factorization.

6717457257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13907812.

The product of its digits is 2881200, while the sum is 51.

The square root of 6717457257 is about 81960.0955160498. The cubic root of 6717457257 is about 1886.8395485417.

The spelling of 6717457257 in words is "six billion, seven hundred seventeen million, four hundred fifty-seven thousand, two hundred fifty-seven".