678525770976 has 96 divisors (see below), whose sum is σ = 1839064550400. Its totient is φ = 218822307840.

The previous prime is 678525770969. The next prime is 678525770981. The reversal of 678525770976 is 679077525876.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 678525770976.

It is a congruent number.

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, 12260295 + ... + 12315513.

It is an arithmetic number, because the mean of its divisors is an integer number (19156922400).

Almost surely, 2^678525770976 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 678525770976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (919532275200).

678525770976 is an abundant number, since it is smaller than the sum of its proper divisors (1160538779424).

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

678525770976 is a wasteful number, since it uses less digits than its factorization.

678525770976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59392 (or 59384 counting only the distinct ones).

The product of its (nonzero) digits is 311169600, while the sum is 69.

The spelling of 678525770976 in words is "six hundred seventy-eight billion, five hundred twenty-five million, seven hundred seventy thousand, nine hundred seventy-six".