678133678 has 8 divisors (see below), whose sum is σ = 1022471568. Its totient is φ = 337309824.

The previous prime is 678133591. The next prime is 678133699. The reversal of 678133678 is 876331876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 878026 + ... + 878797.

It is an arithmetic number, because the mean of its divisors is an integer number (127808946).

Almost surely, 2^678133678 is an apocalyptic number.

678133678 is a deficient number, since it is larger than the sum of its proper divisors (344337890).

678133678 is a wasteful number, since it uses less digits than its factorization.

678133678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757018.

The product of its digits is 1016064, while the sum is 49.

The square root of 678133678 is about 26040.9999423985. Note that the first 4 decimals coincide. The cubic root of 678133678 is about 878.5606973046.

The spelling of 678133678 in words is "six hundred seventy-eight million, one hundred thirty-three thousand, six hundred seventy-eight".