680260428 has 72 divisors (see below), whose sum is σ = 1750786128. Its totient is φ = 222663168.

The previous prime is 680260417. The next prime is 680260499. The reversal of 680260428 is 824062086.

680260428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 680260392 and 680260401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 822151 + ... + 822977.

It is an arithmetic number, because the mean of its divisors is an integer number (24316474).

Almost surely, 2^680260428 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 680260428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875393064).

680260428 is an abundant number, since it is smaller than the sum of its proper divisors (1070525700).

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

680260428 is a wasteful number, since it uses less digits than its factorization.

680260428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 680260428 is about 26081.8026217514. The cubic root of 680260428 is about 879.4781806483.

The spelling of 680260428 in words is "six hundred eighty million, two hundred sixty thousand, four hundred twenty-eight".