680643600672 has 72 divisors (see below), whose sum is σ = 2078393866416. Its totient is φ = 194469598848.

The previous prime is 680643600661. The next prime is 680643600691. The reversal of 680643600672 is 276006346086.

It is a super-2 number, since 2×680643600672² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 72342618 + ... + 72352025.

It is an arithmetic number, because the mean of its divisors is an integer number (28866581478).

Almost surely, 2^680643600672 is an apocalyptic number.

It is an amenable number.

680643600672 is an abundant number, since it is smaller than the sum of its proper divisors (1397750265744).

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

680643600672 is a wasteful number, since it uses less digits than its factorization.

680643600672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144694670 (or 144694655 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 48.

The spelling of 680643600672 in words is "six hundred eighty billion, six hundred forty-three million, six hundred thousand, six hundred seventy-two".