80727397 has 2 divisors, whose sum is σ = 80727398. Its totient is φ = 80727396.

The previous prime is 80727349. The next prime is 80727431. The reversal of 80727397 is 79372708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70576801 + 10150596 = 8401^2 + 3186^2 .

It is a cyclic number.

It is not a de Polignac number, because 80727397 - 2¹¹ = 80725349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80727337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40363698 + 40363699.

It is an arithmetic number, because the mean of its divisors is an integer number (40363699).

Almost surely, 2^80727397 is an apocalyptic number.

It is an amenable number.

80727397 is a deficient number, since it is larger than the sum of its proper divisors (1).

80727397 is an equidigital number, since it uses as much as digits as its factorization.

80727397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 80727397 is about 8984.8426252217. The cubic root of 80727397 is about 432.1889409147.

The spelling of 80727397 in words is "eighty million, seven hundred twenty-seven thousand, three hundred ninety-seven".