80566841 has 2 divisors, whose sum is σ = 80566842. Its totient is φ = 80566840.

The previous prime is 80566831. The next prime is 80566877. The reversal of 80566841 is 14866508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79138816 + 1428025 = 8896^2 + 1195^2 .

It is a cyclic number.

It is not a de Polignac number, because 80566841 - 2⁶ = 80566777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80566795 and 80566804.

It is not a weakly prime, because it can be changed into another prime (80566831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40283420 + 40283421.

It is an arithmetic number, because the mean of its divisors is an integer number (40283421).

Almost surely, 2^80566841 is an apocalyptic number.

It is an amenable number.

80566841 is a deficient number, since it is larger than the sum of its proper divisors (1).

80566841 is an equidigital number, since it uses as much as digits as its factorization.

80566841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 80566841 is about 8975.9033528665. The cubic root of 80566841 is about 431.9022287455.

The spelling of 80566841 in words is "eighty million, five hundred sixty-six thousand, eight hundred forty-one".