676808080 has 80 divisors (see below), whose sum is σ = 1794353904. Its totient is φ = 235192320.

The previous prime is 676808053. The next prime is 676808147. The reversal of 676808080 is 80808676.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 24720784 + 652087296 = 4972^2 + 25536^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461 + ... + 36820.

Almost surely, 2^676808080 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 676808080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897176952).

676808080 is an abundant number, since it is smaller than the sum of its proper divisors (1117545824).

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

676808080 is a wasteful number, since it uses less digits than its factorization.

676808080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38324 (or 38318 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 676808080 is about 26015.5353587044. The cubic root of 676808080 is about 877.9878613868.

The spelling of 676808080 in words is "six hundred seventy-six million, eight hundred eight thousand, eighty".