860172847 has 2 divisors, whose sum is σ = 860172848. Its totient is φ = 860172846.

The previous prime is 860172829. The next prime is 860172869. The reversal of 860172847 is 748271068.

860172847 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-860172847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860172827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430086423 + 430086424.

It is an arithmetic number, because the mean of its divisors is an integer number (430086424).

Almost surely, 2^860172847 is an apocalyptic number.

860172847 is a deficient number, since it is larger than the sum of its proper divisors (1).

860172847 is an equidigital number, since it uses as much as digits as its factorization.

860172847 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 860172847 is about 29328.7034660586. The cubic root of 860172847 is about 951.0322471386.

The spelling of 860172847 in words is "eight hundred sixty million, one hundred seventy-two thousand, eight hundred forty-seven".