680745030 has 128 divisors (see below), whose sum is σ = 1969809408. Its totient is φ = 147197952.

The previous prime is 680745029. The next prime is 680745047. The reversal of 680745030 is 30547086.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 680744982 and 680745000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 467784 + ... + 469236.

It is an arithmetic number, because the mean of its divisors is an integer number (15389136).

Almost surely, 2^680745030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 680745030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (984904704).

680745030 is an abundant number, since it is smaller than the sum of its proper divisors (1289064378).

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

680745030 is a wasteful number, since it uses less digits than its factorization.

680745030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 680745030 is about 26091.0910082350. The cubic root of 680745030 is about 879.6869711367.

The spelling of 680745030 in words is "six hundred eighty million, seven hundred forty-five thousand, thirty".