872071 has 2 divisors, whose sum is σ = 872072. Its totient is φ = 872070.

The previous prime is 872057. The next prime is 872077. The reversal of 872071 is 170278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 872071 - 2¹³ = 863879 is a prime.

872071 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436035 + 436036.

It is an arithmetic number, because the mean of its divisors is an integer number (436036).

2⁸⁷²⁰⁷¹ is an apocalyptic number.

872071 is a deficient number, since it is larger than the sum of its proper divisors (1).

872071 is an equidigital number, since it uses as much as digits as its factorization.

872071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 872071 is about 933.8474179436. The cubic root of 872071 is about 95.5397164921.

The spelling of 872071 in words is "eight hundred seventy-two thousand, seventy-one".