676586781828 has 36 divisors (see below), whose sum is σ = 1727194318668. Its totient is φ = 223295966400.

The previous prime is 676586781809. The next prime is 676586781847. The reversal of 676586781828 is 828187685676.

676586781828 is a `hidden beast` number, since 6 + 7 + 6 + 586 + 7 + 8 + 18 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (676586781809) and next prime (676586781847).

It can be written as a sum of positive squares in 2 ways, for example, as 502181987904 + 174404793924 = 708648^2 + 417618^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93036351 + ... + 93043622.

It is an arithmetic number, because the mean of its divisors is an integer number (47977619963).

Almost surely, 2^676586781828 is an apocalyptic number.

It is an amenable number.

676586781828 is an abundant number, since it is smaller than the sum of its proper divisors (1050607536840).

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

676586781828 is a wasteful number, since it uses less digits than its factorization.

676586781828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186080084 (or 186080079 counting only the distinct ones).

The product of its digits is 433520640, while the sum is 72.

It can be divided in two parts, 67658 and 6781828, that added together give a palindrome (6849486).

The spelling of 676586781828 in words is "six hundred seventy-six billion, five hundred eighty-six million, seven hundred eighty-one thousand, eight hundred twenty-eight".