7685081 has 4 divisors (see below), whose sum is σ = 7872564. Its totient is φ = 7497600.

The previous prime is 7685077. The next prime is 7685107. The reversal of 7685081 is 1805867.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1805867 = 7 ⋅257981.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 6046681 = 1280^2 + 2459^2 .

It is a cyclic number.

It is not a de Polignac number, because 7685081 - 2² = 7685077 is a prime.

It is a super-2 number, since 2×7685081² = 118120939953122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7685021) 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, 93680 + ... + 93761.

It is an arithmetic number, because the mean of its divisors is an integer number (1968141).

Almost surely, 2^7685081 is an apocalyptic number.

It is an amenable number.

7685081 is a deficient number, since it is larger than the sum of its proper divisors (187483).

7685081 is a wasteful number, since it uses less digits than its factorization.

7685081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187482.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 7685081 is about 2772.1978645111. The cubic root of 7685081 is about 197.3404661588.

The spelling of 7685081 in words is "seven million, six hundred eighty-five thousand, eighty-one".