678108966 has 12 divisors (see below), whose sum is σ = 1356345516. Its totient is φ = 226015060.

The previous prime is 678108923. The next prime is 678108979. The reversal of 678108966 is 669801876.

It is a happy number.

678108966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58471 + ... + 69101.

It is an arithmetic number, because the mean of its divisors is an integer number (113028793).

Almost surely, 2^678108966 is an apocalyptic number.

678108966 is an abundant number, since it is smaller than the sum of its proper divisors (678236550).

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

678108966 is an frugal number, since it uses more digits than its factorization.

678108966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21267 (or 10636 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 678108966 is about 26040.5254555280. The cubic root of 678108966 is about 878.5500252418.

The spelling of 678108966 in words is "six hundred seventy-eight million, one hundred eight thousand, nine hundred sixty-six".