7808081 has 8 divisors (see below), whose sum is σ = 8056104. Its totient is φ = 7562880.

The previous prime is 7808051. The next prime is 7808093. The reversal of 7808081 is 1808087.

It can be written as a sum of positive squares in 4 ways, for example, as 625681 + 7182400 = 791^2 + 2680^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7808081 - 2¹⁴ = 7791697 is a prime.

It is a super-2 number, since 2×7808081² = 121932257805122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7808011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5831 + ... + 7043.

It is an arithmetic number, because the mean of its divisors is an integer number (1007013).

Almost surely, 2^7808081 is an apocalyptic number.

It is an amenable number.

7808081 is a deficient number, since it is larger than the sum of its proper divisors (248023).

7808081 is a wasteful number, since it uses less digits than its factorization.

7808081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 7808081 is about 2794.2943653094. The cubic root of 7808081 is about 198.3877125720.

The spelling of 7808081 in words is "seven million, eight hundred eight thousand, eighty-one".