108691087 has 8 divisors (see below), whose sum is σ = 110507456. Its totient is φ = 106883712.

The previous prime is 108691061. The next prime is 108691097. The reversal of 108691087 is 780196801.

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 108691087 - 2¹¹ = 108689039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108691027) 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, 24763 + ... + 28819.

It is an arithmetic number, because the mean of its divisors is an integer number (13813432).

Almost surely, 2^108691087 is an apocalyptic number.

108691087 is a deficient number, since it is larger than the sum of its proper divisors (1816369).

108691087 is an equidigital number, since it uses as much as digits as its factorization.

108691087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4497.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 108691087 is about 10425.5017625052. The cubic root of 108691087 is about 477.2339272211.

The spelling of 108691087 in words is "one hundred eight million, six hundred ninety-one thousand, eighty-seven".