678636246 has 8 divisors (see below), whose sum is σ = 1357272504. Its totient is φ = 226212080.

The previous prime is 678636241. The next prime is 678636253. The reversal of 678636246 is 642636876.

678636246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

678636246 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 678636195 and 678636204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678636241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56553015 + ... + 56553026.

It is an arithmetic number, because the mean of its divisors is an integer number (169659063).

Almost surely, 2^678636246 is an apocalyptic number.

678636246 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

678636246 is a wasteful number, since it uses less digits than its factorization.

678636246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113106046.

The product of its digits is 1741824, while the sum is 48.

The square root of 678636246 is about 26050.6477078786. The cubic root of 678636246 is about 878.7776788413. Note that the first 3 decimals are identical.

The spelling of 678636246 in words is "six hundred seventy-eight million, six hundred thirty-six thousand, two hundred forty-six".