100106987 has 4 divisors (see below), whose sum is σ = 100146600. Its totient is φ = 100067376.

The previous prime is 100106899. The next prime is 100106989. The reversal of 100106987 is 789601001.

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 100106987 - 2²² = 95912683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100106989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15737 + ... + 21162.

It is an arithmetic number, because the mean of its divisors is an integer number (25036650).

Almost surely, 2^100106987 is an apocalyptic number.

100106987 is a deficient number, since it is larger than the sum of its proper divisors (39613).

100106987 is an equidigital number, since it uses as much as digits as its factorization.

100106987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39612.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 100106987 is about 10005.3479199876. The cubic root of 100106987 is about 464.3243542527.

Adding to 100106987 its reverse (789601001), we get a palindrome (889707988).

The spelling of 100106987 in words is "one hundred million, one hundred six thousand, nine hundred eighty-seven".