678188700 has 288 divisors, whose sum is σ = 2528171520. Its totient is φ = 154664640.

The previous prime is 678188699. The next prime is 678188737. The reversal of 678188700 is 7881876.

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 95 ways as a sum of consecutive naturals, for example, 1530679 + ... + 1531121.

Almost surely, 2^678188700 is an apocalyptic number.

678188700 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 678188700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1264085760).

678188700 is an abundant number, since it is smaller than the sum of its proper divisors (1849982820).

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

678188700 is a wasteful number, since it uses less digits than its factorization.

678188700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 678188700 is about 26042.0563704174. The cubic root of 678188700 is about 878.5844580374.

It can be divided in two parts, 6781 and 88700, that added together give a square (95481 = 309²).

The spelling of 678188700 in words is "six hundred seventy-eight million, one hundred eighty-eight thousand, seven hundred".