678367830 has 256 divisors, whose sum is σ = 2117560320. Its totient is φ = 135364608.

The previous prime is 678367799. The next prime is 678367883. The reversal of 678367830 is 38763876.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 678367830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4951522 + ... + 4951658.

It is an arithmetic number, because the mean of its divisors is an integer number (8271720).

Almost surely, 2^678367830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678367830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058780160).

678367830 is an abundant number, since it is smaller than the sum of its proper divisors (1439192490).

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

678367830 is a wasteful number, since it uses less digits than its factorization.

678367830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 678367830 is about 26045.4953878785. The cubic root of 678367830 is about 878.6618047403.

The spelling of 678367830 in words is "six hundred seventy-eight million, three hundred sixty-seven thousand, eight hundred thirty".