678648760 has 32 divisors (see below), whose sum is σ = 1527847200. Its totient is φ = 271301760.

The previous prime is 678648727. The next prime is 678648767. The reversal of 678648760 is 67846876.

It is a junction number, because it is equal to n+sod(n) for n = 678648698 and 678648707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678648767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85021 + ... + 92659.

It is an arithmetic number, because the mean of its divisors is an integer number (47745225).

Almost surely, 2^678648760 is an apocalyptic number.

It is an amenable number.

678648760 is an abundant number, since it is smaller than the sum of its proper divisors (849198440).

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

678648760 is a wasteful number, since it uses less digits than its factorization.

678648760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9871 (or 9867 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 52.

The square root of 678648760 is about 26050.8878927379. The cubic root of 678648760 is about 878.7830803389.

The spelling of 678648760 in words is "six hundred seventy-eight million, six hundred forty-eight thousand, seven hundred sixty".