680695250 has 32 divisors (see below), whose sum is σ = 1318215600. Its totient is φ = 262886400.

The previous prime is 680695237. The next prime is 680695259. The reversal of 680695250 is 52596086.

It can be written as a sum of positive squares in 8 ways, for example, as 17581249 + 663114001 = 4193^2 + 25751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 680695198 and 680695207.

It is not an unprimeable number, because it can be changed into a prime (680695259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39695 + ... + 54194.

Almost surely, 2^680695250 is an apocalyptic number.

680695250 is a deficient number, since it is larger than the sum of its proper divisors (637520350).

680695250 is a wasteful number, since it uses less digits than its factorization.

680695250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93935 (or 93925 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 680695250 is about 26090.1370253205. The cubic root of 680695250 is about 879.6655280202.

The spelling of 680695250 in words is "six hundred eighty million, six hundred ninety-five thousand, two hundred fifty".