850000071 has 8 divisors (see below), whose sum is σ = 1133804160. Its totient is φ = 566431352.

The previous prime is 850000033. The next prime is 850000087. The reversal of 850000071 is 170000058.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-850000071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850000091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50235 + ... + 64988.

It is an arithmetic number, because the mean of its divisors is an integer number (141725520).

Almost surely, 2^850000071 is an apocalyptic number.

850000071 is a deficient number, since it is larger than the sum of its proper divisors (283804089).

850000071 is a wasteful number, since it uses less digits than its factorization.

850000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117685.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 850000071 is about 29154.7606918664. The cubic root of 850000071 is about 947.2682635608.

The spelling of 850000071 in words is "eight hundred fifty million, seventy-one", and thus it is an aban number.