678795117 has 48 divisors (see below), whose sum is σ = 1224451200. Its totient is φ = 325480320.

The previous prime is 678795101. The next prime is 678795163. The reversal of 678795117 is 711597876.

It is not a de Polignac number, because 678795117 - 2⁴ = 678795101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 678795117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678795517) 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 47 ways as a sum of consecutive naturals, for example, 22759 + ... + 43307.

It is an arithmetic number, because the mean of its divisors is an integer number (25509400).

Almost surely, 2^678795117 is an apocalyptic number.

It is an amenable number.

678795117 is a deficient number, since it is larger than the sum of its proper divisors (545656083).

678795117 is a wasteful number, since it uses less digits than its factorization.

678795117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20594 (or 20583 counting only the distinct ones).

The product of its digits is 740880, while the sum is 51.

The square root of 678795117 is about 26053.6968010300. The cubic root of 678795117 is about 878.8462484156.

The spelling of 678795117 in words is "six hundred seventy-eight million, seven hundred ninety-five thousand, one hundred seventeen".