80568577 has 2 divisors, whose sum is σ = 80568578. Its totient is φ = 80568576.

The previous prime is 80568511. The next prime is 80568589. The reversal of 80568577 is 77586508.

It is a Cunningham number, because it is equal to 8976²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80568576 + 1 = 8976^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 80568577 - 2²³ = 72179969 is a prime.

It is not a weakly prime, because it can be changed into another prime (80568077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40284288 + 40284289.

It is an arithmetic number, because the mean of its divisors is an integer number (40284289).

Almost surely, 2^80568577 is an apocalyptic number.

It is an amenable number.

80568577 is a deficient number, since it is larger than the sum of its proper divisors (1).

80568577 is an equidigital number, since it uses as much as digits as its factorization.

80568577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 80568577 is about 8976.0000557041. Note that the first 4 decimals coincide. The cubic root of 80568577 is about 431.9053308359.

The spelling of 80568577 in words is "eighty million, five hundred sixty-eight thousand, five hundred seventy-seven".