107681 has 4 divisors (see below), whose sum is σ = 123072. Its totient is φ = 92292.

The previous prime is 107671. The next prime is 107687. The reversal of 107681 is 186701.

107681 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 107681 - 2¹⁰ = 106657 is a prime.

It is a super-4 number, since 4×107681⁴ (a number of 21 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7685 + ... + 7698.

It is an arithmetic number, because the mean of its divisors is an integer number (30768).

2¹⁰⁷⁶⁸¹ is an apocalyptic number.

It is an amenable number.

107681 is a deficient number, since it is larger than the sum of its proper divisors (15391).

107681 is an equidigital number, since it uses as much as digits as its factorization.

107681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15390.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 107681 is about 328.1478325389. The cubic root of 107681 is about 47.5750981959.

The spelling of 107681 in words is "one hundred seven thousand, six hundred eighty-one".