678687332 has 24 divisors (see below), whose sum is σ = 1220292864. Its totient is φ = 330119552.

The previous prime is 678687329. The next prime is 678687349. The reversal of 678687332 is 233786876.

It is a happy number.

678687332 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20588 + ... + 42204.

It is an arithmetic number, because the mean of its divisors is an integer number (50845536).

Almost surely, 2^678687332 is an apocalyptic number.

It is an amenable number.

678687332 is a deficient number, since it is larger than the sum of its proper divisors (541605532).

678687332 is a wasteful number, since it uses less digits than its factorization.

678687332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21835 (or 21833 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The square root of 678687332 is about 26051.6282024752. The cubic root of 678687332 is about 878.7997289996.

The spelling of 678687332 in words is "six hundred seventy-eight million, six hundred eighty-seven thousand, three hundred thirty-two".