8075981 has 4 divisors (see below), whose sum is σ = 8228412. Its totient is φ = 7923552.

The previous prime is 8075957. The next prime is 8075989. The reversal of 8075981 is 1895708.

8075981 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 5134756 + 2941225 = 2266^2 + 1715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8075981 is a prime.

It is a super-2 number, since 2×8075981² = 130442938224722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8075989) 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, 76136 + ... + 76241.

It is an arithmetic number, because the mean of its divisors is an integer number (2057103).

Almost surely, 2^8075981 is an apocalyptic number.

It is an amenable number.

8075981 is a deficient number, since it is larger than the sum of its proper divisors (152431).

8075981 is a wasteful number, since it uses less digits than its factorization.

8075981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152430.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 8075981 is about 2841.8270531473. The cubic root of 8075981 is about 200.6311809575.

The spelling of 8075981 in words is "eight million, seventy-five thousand, nine hundred eighty-one".