680479448 has 32 divisors (see below), whose sum is σ = 1400783760. Its totient is φ = 307332480.

The previous prime is 680479439. The next prime is 680479477. The reversal of 680479448 is 844974086.

It is a junction number, because it is equal to n+sod(n) for n = 680479396 and 680479405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10811 + ... + 38442.

Almost surely, 2^680479448 is an apocalyptic number.

It is an amenable number.

680479448 is an abundant number, since it is smaller than the sum of its proper divisors (720304312).

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

680479448 is a wasteful number, since it uses less digits than its factorization.

680479448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49427 (or 49423 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 680479448 is about 26086.0009967032. Note that the first 3 decimals coincide. The cubic root of 680479448 is about 879.5725575635.

The spelling of 680479448 in words is "six hundred eighty million, four hundred seventy-nine thousand, four hundred forty-eight".