80380681 has 4 divisors (see below), whose sum is σ = 80414100. Its totient is φ = 80347264.

The previous prime is 80380673. The next prime is 80380693. The reversal of 80380681 is 18608308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54523456 + 25857225 = 7384^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 80380681 - 2³ = 80380673 is a prime.

It is a super-2 number, since 2×80380681² = 12922107756047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80350681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12796 + ... + 18013.

It is an arithmetic number, because the mean of its divisors is an integer number (20103525).

Almost surely, 2^80380681 is an apocalyptic number.

It is an amenable number.

80380681 is a deficient number, since it is larger than the sum of its proper divisors (33419).

80380681 is a wasteful number, since it uses less digits than its factorization.

80380681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33418.

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

The square root of 80380681 is about 8965.5273687609. The cubic root of 80380681 is about 431.5693170720.

Adding to 80380681 its reverse (18608308), we get a palindrome (98988989).

The spelling of 80380681 in words is "eighty million, three hundred eighty thousand, six hundred eighty-one".