678356034 has 16 divisors (see below), whose sum is σ = 1360814880. Its totient is φ = 225434880.

The previous prime is 678355991. The next prime is 678356053. The reversal of 678356034 is 430653876.

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, 168799 + ... + 172770.

It is an arithmetic number, because the mean of its divisors is an integer number (85050930).

Almost surely, 2^678356034 is an apocalyptic number.

678356034 is an abundant number, since it is smaller than the sum of its proper divisors (682458846).

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

678356034 is a wasteful number, since it uses less digits than its factorization.

678356034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341905.

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 678356034 is about 26045.2689369874. The cubic root of 678356034 is about 878.6567117538.

The spelling of 678356034 in words is "six hundred seventy-eight million, three hundred fifty-six thousand, thirty-four".