678413656 has 8 divisors (see below), whose sum is σ = 1272025620. Its totient is φ = 339206824.

The previous prime is 678413629. The next prime is 678413663. The reversal of 678413656 is 656314876.

678413656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42400846 + ... + 42400861.

Almost surely, 2^678413656 is an apocalyptic number.

It is an amenable number.

678413656 is a deficient number, since it is larger than the sum of its proper divisors (593611964).

678413656 is a wasteful number, since it uses less digits than its factorization.

678413656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84801713 (or 84801709 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The square root of 678413656 is about 26046.3751028814. The cubic root of 678413656 is about 878.6815898025.

The spelling of 678413656 in words is "six hundred seventy-eight million, four hundred thirteen thousand, six hundred fifty-six".