71680841 has 2 divisors, whose sum is σ = 71680842. Its totient is φ = 71680840.

The previous prime is 71680813. The next prime is 71680859. The reversal of 71680841 is 14808617.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45630025 + 26050816 = 6755^2 + 5104^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71680841 is a prime.

It is not a weakly prime, because it can be changed into another prime (71680541) 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, 35840420 + 35840421.

It is an arithmetic number, because the mean of its divisors is an integer number (35840421).

Almost surely, 2^71680841 is an apocalyptic number.

It is an amenable number.

71680841 is a deficient number, since it is larger than the sum of its proper divisors (1).

71680841 is an equidigital number, since it uses as much as digits as its factorization.

71680841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 71680841 is about 8466.4538621550. The cubic root of 71680841 is about 415.4011527279.

The spelling of 71680841 in words is "seventy-one million, six hundred eighty thousand, eight hundred forty-one".