80711641 has 2 divisors, whose sum is σ = 80711642. Its totient is φ = 80711640.

The previous prime is 80711627. The next prime is 80711681. The reversal of 80711641 is 14611708.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59228416 + 21483225 = 7696^2 + 4635^2 .

It is a cyclic number.

It is not a de Polignac number, because 80711641 - 2¹¹ = 80709593 is a prime.

It is not a weakly prime, because it can be changed into another prime (80711681) 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 as a sum of consecutive naturals, namely, 40355820 + 40355821.

It is an arithmetic number, because the mean of its divisors is an integer number (40355821).

Almost surely, 2^80711641 is an apocalyptic number.

It is an amenable number.

80711641 is a deficient number, since it is larger than the sum of its proper divisors (1).

80711641 is an equidigital number, since it uses as much as digits as its factorization.

80711641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 80711641 is about 8983.9657724192. The cubic root of 80711641 is about 432.1608215390.

The spelling of 80711641 in words is "eighty million, seven hundred eleven thousand, six hundred forty-one".