71650871 has 2 divisors, whose sum is σ = 71650872. Its totient is φ = 71650870.

The previous prime is 71650861. The next prime is 71650883. The reversal of 71650871 is 17805617.

It is a weak prime.

It is an emirp because it is prime and its reverse (17805617) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71650871 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71650861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35825435 + 35825436.

It is an arithmetic number, because the mean of its divisors is an integer number (35825436).

Almost surely, 2^71650871 is an apocalyptic number.

71650871 is a deficient number, since it is larger than the sum of its proper divisors (1).

71650871 is an equidigital number, since it uses as much as digits as its factorization.

71650871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 71650871 is about 8464.6837507375. The cubic root of 71650871 is about 415.3432511192.

The spelling of 71650871 in words is "seventy-one million, six hundred fifty thousand, eight hundred seventy-one".