678685095 has 128 divisors (see below), whose sum is σ = 1376040960. Its totient is φ = 314496000.

The previous prime is 678685093. The next prime is 678685097. The reversal of 678685095 is 590586876.

678685095 is a `hidden beast` number, since 6 + 78 + 68 + 509 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (678685093) and next prime (678685097).

It is not a de Polignac number, because 678685095 - 2¹ = 678685093 is a prime.

It is a super-2 number, since 2×678685095² = 921226916350318050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678685093) 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 127 ways as a sum of consecutive naturals, for example, 4322757 + ... + 4322913.

It is an arithmetic number, because the mean of its divisors is an integer number (10750320).

Almost surely, 2^678685095 is an apocalyptic number.

678685095 is an abundant number, since it is smaller than the sum of its proper divisors (697355865).

678685095 is a wasteful number, since it uses less digits than its factorization.

678685095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 54.

The square root of 678685095 is about 26051.5852684630. The cubic root of 678685095 is about 878.7987634705.

The spelling of 678685095 in words is "six hundred seventy-eight million, six hundred eighty-five thousand, ninety-five".