108678685 has 4 divisors (see below), whose sum is σ = 130414428. Its totient is φ = 86942944.

The previous prime is 108678643. The next prime is 108678743. The reversal of 108678685 is 586876801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 586876801 = 7 ⋅83839543.

It can be written as a sum of positive squares in 2 ways, for example, as 84971524 + 23707161 = 9218^2 + 4869^2 .

It is a cyclic number.

It is not a de Polignac number, because 108678685 - 2¹⁷ = 108547613 is a prime.

It is a super-2 number, since 2×108678685² = 23622113146658450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10867864 + ... + 10867873.

It is an arithmetic number, because the mean of its divisors is an integer number (32603607).

Almost surely, 2^108678685 is an apocalyptic number.

It is an amenable number.

108678685 is a deficient number, since it is larger than the sum of its proper divisors (21735743).

108678685 is an equidigital number, since it uses as much as digits as its factorization.

108678685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21735742.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 108678685 is about 10424.9069540212. The cubic root of 108678685 is about 477.2157752259.

The spelling of 108678685 in words is "one hundred eight million, six hundred seventy-eight thousand, six hundred eighty-five".