10168681 has 4 divisors (see below), whose sum is σ = 10308052. Its totient is φ = 10029312.

The previous prime is 10168679. The next prime is 10168699. The reversal of 10168681 is 18686101.

It is a happy number.

10168681 is digitally balanced in base 2, 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 7750656 + 2418025 = 2784^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 10168681 - 2¹ = 10168679 is a prime.

It is a super-2 number, since 2×10168681² = 206804146559522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10168621) 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, 69576 + ... + 69721.

It is an arithmetic number, because the mean of its divisors is an integer number (2577013).

Almost surely, 2^10168681 is an apocalyptic number.

It is an amenable number.

10168681 is a deficient number, since it is larger than the sum of its proper divisors (139371).

10168681 is an equidigital number, since it uses as much as digits as its factorization.

10168681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139370.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 10168681 is about 3188.8369353104. The cubic root of 10168681 is about 216.6480949236.

The spelling of 10168681 in words is "ten million, one hundred sixty-eight thousand, six hundred eighty-one".