6428252717 has 4 divisors (see below), whose sum is σ = 6435915360. Its totient is φ = 6420590076.

The previous prime is 6428252669. The next prime is 6428252771. The reversal of 6428252717 is 7172528246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6428252717 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 (6428252777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3830063 + ... + 3831740.

It is an arithmetic number, because the mean of its divisors is an integer number (1608978840).

Almost surely, 2^6428252717 is an apocalyptic number.

It is an amenable number.

6428252717 is a deficient number, since it is larger than the sum of its proper divisors (7662643).

6428252717 is an equidigital number, since it uses as much as digits as its factorization.

6428252717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7662642.

The product of its digits is 376320, while the sum is 44.

The square root of 6428252717 is about 80176.3850332503. The cubic root of 6428252717 is about 1859.3635542650.

The spelling of 6428252717 in words is "six billion, four hundred twenty-eight million, two hundred fifty-two thousand, seven hundred seventeen".