678676352 has 64 divisors (see below), whose sum is σ = 1432080000. Its totient is φ = 319477248.

The previous prime is 678676331. The next prime is 678676367. The reversal of 678676352 is 253676876.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 678676352.

It is a congruent number.

It is an unprimeable number.

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, 434549 + ... + 436107.

It is an arithmetic number, because the mean of its divisors is an integer number (22376250).

Almost surely, 2^678676352 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678676352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716040000).

678676352 is an abundant number, since it is smaller than the sum of its proper divisors (753403648).

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

678676352 is a wasteful number, since it uses less digits than its factorization.

678676352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1759 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 50.

The square root of 678676352 is about 26051.4174662340. The cubic root of 678676352 is about 878.7949898153.

It can be divided in two parts, 6786 and 76352, that added together give a palindrome (83138).

The spelling of 678676352 in words is "six hundred seventy-eight million, six hundred seventy-six thousand, three hundred fifty-two".