680428260 has 72 divisors (see below), whose sum is σ = 2066096760. Its totient is φ = 181260288.

The previous prime is 680428223. The next prime is 680428271. The reversal of 680428260 is 62824086.

It can be written as a sum of positive squares in 4 ways, for example, as 32012964 + 648415296 = 5658^2 + 25464^2 .

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

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, 320964 + ... + 323076.

Almost surely, 2^680428260 is an apocalyptic number.

680428260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

680428260 is an abundant number, since it is smaller than the sum of its proper divisors (1385668500).

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

680428260 is a wasteful number, since it uses less digits than its factorization.

680428260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3917 (or 3912 counting only the distinct ones).

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

The square root of 680428260 is about 26085.0198389804. The cubic root of 680428260 is about 879.5505021881.

The spelling of 680428260 in words is "six hundred eighty million, four hundred twenty-eight thousand, two hundred sixty".