676776780 has 36 divisors (see below), whose sum is σ = 2052890112. Its totient is φ = 180473760.

The previous prime is 676776743. The next prime is 676776781. The reversal of 676776780 is 87677676.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (676776781) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1879756 + ... + 1880115.

Almost surely, 2^676776780 is an apocalyptic number.

676776780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

676776780 is an abundant number, since it is smaller than the sum of its proper divisors (1376113332).

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

676776780 is a wasteful number, since it uses less digits than its factorization.

676776780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759886 (or 3759881 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The square root of 676776780 is about 26014.9337881149. The cubic root of 676776780 is about 877.9743265584.

The spelling of 676776780 in words is "six hundred seventy-six million, seven hundred seventy-six thousand, seven hundred eighty".