80540617 has 2 divisors, whose sum is σ = 80540618. Its totient is φ = 80540616.

The previous prime is 80540561. The next prime is 80540683. The reversal of 80540617 is 71604508.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54110736 + 26429881 = 7356^2 + 5141^2 .

It is a cyclic number.

It is not a de Polignac number, because 80540617 - 2¹¹ = 80538569 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80540017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40270308 + 40270309.

It is an arithmetic number, because the mean of its divisors is an integer number (40270309).

Almost surely, 2^80540617 is an apocalyptic number.

It is an amenable number.

80540617 is a deficient number, since it is larger than the sum of its proper divisors (1).

80540617 is an equidigital number, since it uses as much as digits as its factorization.

80540617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 80540617 is about 8974.4424339343. The cubic root of 80540617 is about 431.8553631740.

The spelling of 80540617 in words is "eighty million, five hundred forty thousand, six hundred seventeen".