71846881 has 2 divisors, whose sum is σ = 71846882. Its totient is φ = 71846880.

The previous prime is 71846867. The next prime is 71846893. The reversal of 71846881 is 18864817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 48720400 + 23126481 = 6980^2 + 4809^2 .

It is a cyclic number.

It is not a de Polignac number, because 71846881 - 2⁵ = 71846849 is a prime.

It is a super-2 number, since 2×71846881² = 10323948618856322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71846081) 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, 35923440 + 35923441.

It is an arithmetic number, because the mean of its divisors is an integer number (35923441).

Almost surely, 2^71846881 is an apocalyptic number.

It is an amenable number.

71846881 is a deficient number, since it is larger than the sum of its proper divisors (1).

71846881 is an equidigital number, since it uses as much as digits as its factorization.

71846881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 43.

The square root of 71846881 is about 8476.2539485317. The cubic root of 71846881 is about 415.7216475716.

It can be divided in two parts, 71846 and 881, that added together give a palindrome (72727).

The spelling of 71846881 in words is "seventy-one million, eight hundred forty-six thousand, eight hundred eighty-one".