678034338 has 16 divisors (see below), whose sum is σ = 1363170816. Its totient is φ = 224827760.

The previous prime is 678034321. The next prime is 678034373. The reversal of 678034338 is 833430876.

It is a self number, because there is not a number n which added to its sum of digits gives 678034338.

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, 294681 + ... + 296972.

It is an arithmetic number, because the mean of its divisors is an integer number (85198176).

Almost surely, 2^678034338 is an apocalyptic number.

678034338 is an abundant number, since it is smaller than the sum of its proper divisors (685136478).

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

678034338 is a wasteful number, since it uses less digits than its factorization.

678034338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591849.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 678034338 is about 26039.0924957073. The cubic root of 678034338 is about 878.5177950055.

The spelling of 678034338 in words is "six hundred seventy-eight million, thirty-four thousand, three hundred thirty-eight".