80680393 has 2 divisors, whose sum is σ = 80680394. Its totient is φ = 80680392.

The previous prime is 80680381. The next prime is 80680417. The reversal of 80680393 is 39308608.

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., 65415744 + 15264649 = 8088^2 + 3907^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-80680393 is a prime.

It is not a weakly prime, because it can be changed into another prime (80680373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40340196 + 40340197.

It is an arithmetic number, because the mean of its divisors is an integer number (40340197).

Almost surely, 2^80680393 is an apocalyptic number.

It is an amenable number.

80680393 is a deficient number, since it is larger than the sum of its proper divisors (1).

80680393 is an equidigital number, since it uses as much as digits as its factorization.

80680393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 80680393 is about 8982.2265057167. The cubic root of 80680393 is about 432.1050431147.

The spelling of 80680393 in words is "eighty million, six hundred eighty thousand, three hundred ninety-three".