678127746 has 32 divisors (see below), whose sum is σ = 1432785600. Its totient is φ = 213373440.

The previous prime is 678127721. The next prime is 678127753. The reversal of 678127746 is 647721876.

It is a junction number, because it is equal to n+sod(n) for n = 678127695 and 678127704.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21450 + ... + 42618.

It is an arithmetic number, because the mean of its divisors is an integer number (44774550).

Almost surely, 2^678127746 is an apocalyptic number.

678127746 is an abundant number, since it is smaller than the sum of its proper divisors (754657854).

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

678127746 is a wasteful number, since it uses less digits than its factorization.

678127746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21474.

The product of its digits is 790272, while the sum is 48.

The square root of 678127746 is about 26040.8860448334. The cubic root of 678127746 is about 878.5581355495.

The spelling of 678127746 in words is "six hundred seventy-eight million, one hundred twenty-seven thousand, seven hundred forty-six".