8680981 has 4 divisors (see below), whose sum is σ = 8692012. Its totient is φ = 8669952.

The previous prime is 8680951. The next prime is 8680993. The reversal of 8680981 is 1890868.

It is a happy number.

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 2722500 + 5958481 = 1650^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 8680981 - 2¹¹ = 8678933 is a prime.

It is a super-2 number, since 2×8680981² = 150718862244722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8680901) 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, 4236 + ... + 5941.

It is an arithmetic number, because the mean of its divisors is an integer number (2173003).

Almost surely, 2^8680981 is an apocalyptic number.

It is an amenable number.

8680981 is a deficient number, since it is larger than the sum of its proper divisors (11031).

8680981 is a wasteful number, since it uses less digits than its factorization.

8680981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11030.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 8680981 is about 2946.3504543757. The cubic root of 8680981 is about 205.5210303619.

The spelling of 8680981 in words is "eight million, six hundred eighty thousand, nine hundred eighty-one".