678478960 has 20 divisors (see below), whose sum is σ = 1577463768. Its totient is φ = 271391552.

The previous prime is 678478919. The next prime is 678478963. The reversal of 678478960 is 69874876.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678478963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4240414 + ... + 4240573.

Almost surely, 2^678478960 is an apocalyptic number.

It is an amenable number.

678478960 is an abundant number, since it is smaller than the sum of its proper divisors (898984808).

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

678478960 is a wasteful number, since it uses less digits than its factorization.

678478960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8481000 (or 8480994 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 55.

The square root of 678478960 is about 26047.6286828571. The cubic root of 678478960 is about 878.7097828187.

The spelling of 678478960 in words is "six hundred seventy-eight million, four hundred seventy-eight thousand, nine hundred sixty".