678568747 has 8 divisors (see below), whose sum is σ = 713650176. Its totient is φ = 643952232.

The previous prime is 678568721. The next prime is 678568757. The reversal of 678568747 is 747865876.

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

It is a cyclic number.

It is not a de Polignac number, because 678568747 - 2¹¹ = 678566699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678568691 and 678568700.

It is not an unprimeable number, because it can be changed into a prime (678568757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113233 + ... + 119074.

It is an arithmetic number, because the mean of its divisors is an integer number (89206272).

Almost surely, 2^678568747 is an apocalyptic number.

678568747 is a deficient number, since it is larger than the sum of its proper divisors (35081429).

678568747 is a wasteful number, since it uses less digits than its factorization.

678568747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232457.

The product of its digits is 15805440, while the sum is 58.

The square root of 678568747 is about 26049.3521416560. The cubic root of 678568747 is about 878.7485426722.

The spelling of 678568747 in words is "six hundred seventy-eight million, five hundred sixty-eight thousand, seven hundred forty-seven".