8380681 has 4 divisors (see below), whose sum is σ = 8669700. Its totient is φ = 8091664.

The previous prime is 8380667. The next prime is 8380693. The reversal of 8380681 is 1860838.

8380681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 6375625 + 2005056 = 2525^2 + 1416^2 .

It is a cyclic number.

It is not a de Polignac number, because 8380681 - 2⁵ = 8380649 is a prime.

It is a super-2 number, since 2×8380681² = 140471628047522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8380621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144466 + ... + 144523.

It is an arithmetic number, because the mean of its divisors is an integer number (2167425).

Almost surely, 2^8380681 is an apocalyptic number.

It is an amenable number.

8380681 is a deficient number, since it is larger than the sum of its proper divisors (289019).

8380681 is a wasteful number, since it uses less digits than its factorization.

8380681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289018.

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

The square root of 8380681 is about 2894.9405866097. The cubic root of 8380681 is about 203.1233123647.

It can be divided in two parts, 8 and 380681, that added together give a square (380689 = 617²).

The spelling of 8380681 in words is "eight million, three hundred eighty thousand, six hundred eighty-one".