676641476660544 has 448 divisors, whose sum is σ = 2077925414880000. Its totient is φ = 215696877944832.

The previous prime is 676641476660531. The next prime is 676641476660657. The reversal of 676641476660544 is 445066674146676.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33682178052 + ... + 33682198140.

It is an arithmetic number, because the mean of its divisors is an integer number (4638226372500).

Almost surely, 2^{676641476660544} is an apocalyptic number.

676641476660544 is a gapful number since it is divisible by the number (64) 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 676641476660544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1038962707440000).

676641476660544 is an abundant number, since it is smaller than the sum of its proper divisors (1401283938219456).

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

676641476660544 is a wasteful number, since it uses less digits than its factorization.

676641476660544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29135 (or 29119 counting only the distinct ones).

The product of its (nonzero) digits is 2926264320, while the sum is 72.

The spelling of 676641476660544 in words is "six hundred seventy-six trillion, six hundred forty-one billion, four hundred seventy-six million, six hundred sixty thousand, five hundred forty-four".