678934080 has 336 divisors, whose sum is σ = 2638958400. Its totient is φ = 158699520.

The previous prime is 678934057. The next prime is 678934099. The reversal of 678934080 is 80439876.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 918351 + ... + 919089.

Almost surely, 2^678934080 is an apocalyptic number.

678934080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 678934080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319479200).

678934080 is an abundant number, since it is smaller than the sum of its proper divisors (1960024320).

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

678934080 is a wasteful number, since it uses less digits than its factorization.

678934080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 789 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 678934080 is about 26056.3635221801. The cubic root of 678934080 is about 878.9062168190.

The spelling of 678934080 in words is "six hundred seventy-eight million, nine hundred thirty-four thousand, eighty".