107987 has 4 divisors (see below), whose sum is σ = 117816. Its totient is φ = 98160.

The previous prime is 107981. The next prime is 107999. The reversal of 107987 is 789701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 107987 - 2⁴ = 107971 is a prime.

It is a super-2 number, since 2×107987² = 23322384338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107981) 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, 4898 + ... + 4919.

It is an arithmetic number, because the mean of its divisors is an integer number (29454).

2¹⁰⁷⁹⁸⁷ is an apocalyptic number.

107987 is a deficient number, since it is larger than the sum of its proper divisors (9829).

107987 is an equidigital number, since it uses as much as digits as its factorization.

107987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 107987 is about 328.6137550377. The cubic root of 107987 is about 47.6201207218.

It can be divided in two parts, 10 and 7987, that added together give a palindrome (7997).

The spelling of 107987 in words is "one hundred seven thousand, nine hundred eighty-seven".