676722256512 has 128 divisors (see below), whose sum is σ = 1821758368320. Its totient is φ = 222555340800.

The previous prime is 676722256499. The next prime is 676722256513. The reversal of 676722256512 is 215652227676.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×676722256512² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (676722256513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8663712 + ... + 8741472.

Almost surely, 2^676722256512 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 676722256512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910879184160).

676722256512 is an abundant number, since it is smaller than the sum of its proper divisors (1145036111808).

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

676722256512 is a wasteful number, since it uses less digits than its factorization.

676722256512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78082 (or 78070 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 676722256512 in words is "six hundred seventy-six billion, seven hundred twenty-two million, two hundred fifty-six thousand, five hundred twelve".