105080681 has 4 divisors (see below), whose sum is σ = 105224772. Its totient is φ = 104936592.

The previous prime is 105080623. The next prime is 105080699. The reversal of 105080681 is 186080501.

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 99600400 + 5480281 = 9980^2 + 2341^2 .

It is a cyclic number.

It is not a de Polignac number, because 105080681 - 2¹⁰ = 105079657 is a prime.

It is a super-2 number, since 2×105080681² = 22083899038847522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105080081) 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, 70946 + ... + 72411.

It is an arithmetic number, because the mean of its divisors is an integer number (26306193).

Almost surely, 2^105080681 is an apocalyptic number.

It is an amenable number.

105080681 is a deficient number, since it is larger than the sum of its proper divisors (144091).

105080681 is an equidigital number, since it uses as much as digits as its factorization.

105080681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144090.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 105080681 is about 10250.8868396837. The cubic root of 105080681 is about 471.8902014663.

The spelling of 105080681 in words is "one hundred five million, eighty thousand, six hundred eighty-one".