6857247673 has 2 divisors, whose sum is σ = 6857247674. Its totient is φ = 6857247672.

The previous prime is 6857247667. The next prime is 6857247679. The reversal of 6857247673 is 3767427586.

It is a balanced prime because it is at equal distance from previous prime (6857247667) and next prime (6857247679).

It can be written as a sum of positive squares in only one way, i.e., 6854515264 + 2732409 = 82792^2 + 1653^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6857247673 is a prime.

It is the 82809-th Hogben number.

It is not a weakly prime, because it can be changed into another prime (6857247679) by changing a digit.

It is a nontrivial repunit in base 82808.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3428623836 + 3428623837.

It is an arithmetic number, because the mean of its divisors is an integer number (3428623837).

Almost surely, 2^6857247673 is an apocalyptic number.

It is an amenable number.

6857247673 is a deficient number, since it is larger than the sum of its proper divisors (1).

6857247673 is an equidigital number, since it uses as much as digits as its factorization.

6857247673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11854080, while the sum is 55.

The square root of 6857247673 is about 82808.5000045285. The cubic root of 6857247673 is about 1899.8381831719.

The spelling of 6857247673 in words is "six billion, eight hundred fifty-seven million, two hundred forty-seven thousand, six hundred seventy-three".