108507987 has 24 divisors (see below), whose sum is σ = 180427520. Its totient is φ = 61553520.

The previous prime is 108507979. The next prime is 108507989. The reversal of 108507987 is 789705801.

It is not a de Polignac number, because 108507987 - 2³ = 108507979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108507989) 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 23 ways as a sum of consecutive naturals, for example, 2562 + ... + 14952.

Almost surely, 2^108507987 is an apocalyptic number.

108507987 is a deficient number, since it is larger than the sum of its proper divisors (71919533).

108507987 is a wasteful number, since it uses less digits than its factorization.

108507987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543 (or 12540 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 45.

The square root of 108507987 is about 10416.7167092131. The cubic root of 108507987 is about 476.9657953137.

The spelling of 108507987 in words is "one hundred eight million, five hundred seven thousand, nine hundred eighty-seven".