80680381 has 2 divisors, whose sum is σ = 80680382. Its totient is φ = 80680380.

The previous prime is 80680373. The next prime is 80680393. The reversal of 80680381 is 18308608.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76912900 + 3767481 = 8770^2 + 1941^2 .

It is a cyclic number.

It is not a de Polignac number, because 80680381 - 2³ = 80680373 is a prime.

It is a super-2 number, since 2×80680381² = 13018647756610322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80680981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40340190 + 40340191.

It is an arithmetic number, because the mean of its divisors is an integer number (40340191).

Almost surely, 2^80680381 is an apocalyptic number.

It is an amenable number.

80680381 is a deficient number, since it is larger than the sum of its proper divisors (1).

80680381 is an equidigital number, since it uses as much as digits as its factorization.

80680381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 80680381 is about 8982.2258377309. The cubic root of 80680381 is about 432.1050216916.

Adding to 80680381 its reverse (18308608), we get a palindrome (98988989).

The spelling of 80680381 in words is "eighty million, six hundred eighty thousand, three hundred eighty-one".