871705273 has 2 divisors, whose sum is σ = 871705274. Its totient is φ = 871705272.

The previous prime is 871705253. The next prime is 871705349. The reversal of 871705273 is 372507178.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736959609 + 134745664 = 27147^2 + 11608^2 .

It is a cyclic number.

It is not a de Polignac number, because 871705273 - 2²¹ = 869608121 is a prime.

It is not a weakly prime, because it can be changed into another prime (871705253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435852636 + 435852637.

It is an arithmetic number, because the mean of its divisors is an integer number (435852637).

Almost surely, 2^871705273 is an apocalyptic number.

It is an amenable number.

871705273 is a deficient number, since it is larger than the sum of its proper divisors (1).

871705273 is an equidigital number, since it uses as much as digits as its factorization.

871705273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 871705273 is about 29524.6553409180. The cubic root of 871705273 is about 955.2635888724.

The spelling of 871705273 in words is "eight hundred seventy-one million, seven hundred five thousand, two hundred seventy-three".