678080016 has 30 divisors (see below), whose sum is σ = 1897682670. Its totient is φ = 226026624.

The previous prime is 678079981. The next prime is 678080023. The reversal of 678080016 is 610080876.

It can be written as a sum of positive squares in only one way, i.e., 639887616 + 38192400 = 25296^2 + 6180^2 .

It is a super-3 number, since 3×678080016³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2354301 + ... + 2354588.

It is an arithmetic number, because the mean of its divisors is an integer number (63256089).

Almost surely, 2^678080016 is an apocalyptic number.

It is an amenable number.

678080016 is an abundant number, since it is smaller than the sum of its proper divisors (1219602654).

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

678080016 is a wasteful number, since it uses less digits than its factorization.

678080016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708903 (or 4708894 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 678080016 is about 26039.9695852357. The cubic root of 678080016 is about 878.5375226370.

It can be divided in two parts, 6780800 and 16, that added together give a square (6780816 = 2604²).

The spelling of 678080016 in words is "six hundred seventy-eight million, eighty thousand, sixteen".