680730903 has 18 divisors (see below), whose sum is σ = 999710712. Its totient is φ = 446358960.

The previous prime is 680730877. The next prime is 680730907. The reversal of 680730903 is 309037086.

It is not a de Polignac number, because 680730903 - 2⁸ = 680730647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680730907) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23326 + ... + 43652.

It is an arithmetic number, because the mean of its divisors is an integer number (55539484).

Almost surely, 2^680730903 is an apocalyptic number.

680730903 is a deficient number, since it is larger than the sum of its proper divisors (318979809).

680730903 is a wasteful number, since it uses less digits than its factorization.

680730903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20455 (or 20391 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 680730903 is about 26090.8202822372. The cubic root of 680730903 is about 879.6808859294.

Adding to 680730903 its reverse (309037086), we get a palindrome (989767989).

The spelling of 680730903 in words is "six hundred eighty million, seven hundred thirty thousand, nine hundred three".