108697778 has 12 divisors (see below), whose sum is σ = 189666702. Its totient is φ = 46584720.

The previous prime is 108697763. The next prime is 108697817. The reversal of 108697778 is 877796801.

It can be written as a sum of positive squares in only one way, i.e., 95902849 + 12794929 = 9793^2 + 3577^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 554483 + ... + 554678.

Almost surely, 2^108697778 is an apocalyptic number.

108697778 is a deficient number, since it is larger than the sum of its proper divisors (80968924).

108697778 is a wasteful number, since it uses less digits than its factorization.

108697778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109177 (or 1109170 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 53.

The square root of 108697778 is about 10425.8226533929. The cubic root of 108697778 is about 477.2437198263.

The spelling of 108697778 in words is "one hundred eight million, six hundred ninety-seven thousand, seven hundred seventy-eight".