680344003444 has 24 divisors (see below), whose sum is σ = 1360770667200. Its totient is φ = 291558288576.

The previous prime is 680344003433. The next prime is 680344003447. The reversal of 680344003444 is 444300443086.

It is a super-2 number, since 2×680344003444² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 680344003397 and 680344003406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680344003447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263542 + ... + 1195885.

It is an arithmetic number, because the mean of its divisors is an integer number (56698777800).

Almost surely, 2^680344003444 is an apocalyptic number.

It is an amenable number.

680344003444 is an abundant number, since it is smaller than the sum of its proper divisors (680426663756).

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

680344003444 is a wasteful number, since it uses less digits than its factorization.

680344003444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476087 (or 1476085 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 680344003444 in words is "six hundred eighty billion, three hundred forty-four million, three thousand, four hundred forty-four".