80727001 has 2 divisors, whose sum is σ = 80727002. Its totient is φ = 80727000.

The previous prime is 80726993. The next prime is 80727011. The reversal of 80727001 is 10072708.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 29975625 = 7124^2 + 5475^2 .

It is a cyclic number.

It is not a de Polignac number, because 80727001 - 2³ = 80726993 is a prime.

It is not a weakly prime, because it can be changed into another prime (80727011) 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, 40363500 + 40363501.

It is an arithmetic number, because the mean of its divisors is an integer number (40363501).

Almost surely, 2^80727001 is an apocalyptic number.

It is an amenable number.

80727001 is a deficient number, since it is larger than the sum of its proper divisors (1).

80727001 is an equidigital number, since it uses as much as digits as its factorization.

80727001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 80727001 is about 8984.8205880808. The cubic root of 80727001 is about 432.1882342273.

Adding to 80727001 its reverse (10072708), we get a palindrome (90799709).

The spelling of 80727001 in words is "eighty million, seven hundred twenty-seven thousand, one".