105487987 has 8 divisors (see below), whose sum is σ = 117754560. Its totient is φ = 93667560.

The previous prime is 105487969. The next prime is 105487997. The reversal of 105487987 is 789784501.

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

It is a cyclic number.

It is not a de Polignac number, because 105487987 - 2¹⁹ = 104963699 is a prime.

It is a super-2 number, since 2×105487987² = 22255430802624338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105487987.

It is not an unprimeable number, because it can be changed into a prime (105487927) 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, 111037 + ... + 111982.

It is an arithmetic number, because the mean of its divisors is an integer number (14719320).

Almost surely, 2^105487987 is an apocalyptic number.

105487987 is a deficient number, since it is larger than the sum of its proper divisors (12266573).

105487987 is a wasteful number, since it uses less digits than its factorization.

105487987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223073.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 105487987 is about 10270.7344917489. The cubic root of 105487987 is about 472.4991174176.

The spelling of 105487987 in words is "one hundred five million, four hundred eighty-seven thousand, nine hundred eighty-seven".