678235834 has 8 divisors (see below), whose sum is σ = 1027842228. Its totient is φ = 335621760.

The previous prime is 678235829. The next prime is 678235849. The reversal of 678235834 is 438532876.

678235834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 669515625 + 8720209 = 25875^2 + 2953^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1747837 + ... + 1748224.

Almost surely, 2^678235834 is an apocalyptic number.

678235834 is a deficient number, since it is larger than the sum of its proper divisors (349606394).

678235834 is a wasteful number, since it uses less digits than its factorization.

678235834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3496160.

The product of its digits is 967680, while the sum is 46.

The square root of 678235834 is about 26042.9613139520. The cubic root of 678235834 is about 878.6048113897.

The spelling of 678235834 in words is "six hundred seventy-eight million, two hundred thirty-five thousand, eight hundred thirty-four".