680345000 has 40 divisors (see below), whose sum is σ = 1594060050. Its totient is φ = 272136000.

The previous prime is 680344999. The next prime is 680345023. The reversal of 680345000 is 543086.

It can be written as a sum of positive squares in 5 ways, for example, as 4656964 + 675688036 = 2158^2 + 25994^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63035 + ... + 73034.

Almost surely, 2^680345000 is an apocalyptic number.

It is an amenable number.

680345000 is an abundant number, since it is smaller than the sum of its proper divisors (913715050).

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

680345000 is a wasteful number, since it uses less digits than its factorization.

680345000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136095 (or 136076 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 680345000 is about 26083.4238550080. The cubic root of 680345000 is about 879.5146255859.

Adding to 680345000 its reverse (543086), we get a palindrome (680888086).

The spelling of 680345000 in words is "six hundred eighty million, three hundred forty-five thousand".