678127856 has 30 divisors (see below), whose sum is σ = 1528384320. Its totient is φ = 290625888.

The previous prime is 678127847. The next prime is 678127859. The reversal of 678127856 is 658721876.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678127859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431696 + ... + 433263.

It is an arithmetic number, because the mean of its divisors is an integer number (50946144).

Almost surely, 2^678127856 is an apocalyptic number.

It is an amenable number.

678127856 is an abundant number, since it is smaller than the sum of its proper divisors (850256464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678127856 is a wasteful number, since it uses less digits than its factorization.

678127856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864981 (or 864968 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 50.

The square root of 678127856 is about 26040.8881568966. Note that the first 3 decimals coincide. The cubic root of 678127856 is about 878.5581830535.

The spelling of 678127856 in words is "six hundred seventy-eight million, one hundred twenty-seven thousand, eight hundred fifty-six".