109688287 has 8 divisors (see below), whose sum is σ = 110682000. Its totient is φ = 108698304.

The previous prime is 109688263. The next prime is 109688297. The reversal of 109688287 is 782886901.

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-109688287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109688287.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109688297) 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 7 ways as a sum of consecutive naturals, for example, 127264 + ... + 128122.

It is an arithmetic number, because the mean of its divisors is an integer number (13835250).

Almost surely, 2^109688287 is an apocalyptic number.

109688287 is a deficient number, since it is larger than the sum of its proper divisors (993713).

109688287 is an equidigital number, since it uses as much as digits as its factorization.

109688287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 109688287 is about 10473.2176049197. The cubic root of 109688287 is about 478.6889672621.

The spelling of 109688287 in words is "one hundred nine million, six hundred eighty-eight thousand, two hundred eighty-seven".