6859711217 has 24 divisors (see below), whose sum is σ = 7210967400. Its totient is φ = 6524582400.

The previous prime is 6859711171. The next prime is 6859711219. The reversal of 6859711217 is 7121179586.

It can be written as a sum of positive squares in 4 ways, for example, as 156850576 + 6702860641 = 12524^2 + 81871^2 .

It is not a de Polignac number, because 6859711217 - 2¹² = 6859707121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6859711219) 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 23 ways as a sum of consecutive naturals, for example, 19655159 + ... + 19655507.

It is an arithmetic number, because the mean of its divisors is an integer number (300456975).

Almost surely, 2^6859711217 is an apocalyptic number.

It is an amenable number.

6859711217 is a deficient number, since it is larger than the sum of its proper divisors (351256183).

6859711217 is a wasteful number, since it uses less digits than its factorization.

6859711217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 674 counting only the distinct ones).

The product of its digits is 211680, while the sum is 47.

The square root of 6859711217 is about 82823.3736151818. The cubic root of 6859711217 is about 1900.0656687368.

The spelling of 6859711217 in words is "six billion, eight hundred fifty-nine million, seven hundred eleven thousand, two hundred seventeen".