100000987 has 8 divisors (see below), whose sum is σ = 110487456. Its totient is φ = 90026112.

The previous prime is 100000969. The next prime is 100001029. The reversal of 100000987 is 789000001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100000987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100000937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127488 + ... + 128269.

It is an arithmetic number, because the mean of its divisors is an integer number (13810932).

Almost surely, 2^100000987 is an apocalyptic number.

100000987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

100000987 is a deficient number, since it is larger than the sum of its proper divisors (10486469).

100000987 is a wasteful number, since it uses less digits than its factorization.

100000987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255797.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 100000987 is about 10000.0493498782. The cubic root of 100000987 is about 464.1604104390.

Adding to 100000987 its reverse (789000001), we get a palindrome (889000988).

The spelling of 100000987 in words is "one hundred million, nine hundred eighty-seven", and thus it is an aban number.