681020200 has 48 divisors (see below), whose sum is σ = 1809571680. Its totient is φ = 233492160.

The previous prime is 681020167. The next prime is 681020213. The reversal of 681020200 is 2020186.

It is a happy number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 241822 + ... + 244621.

It is an arithmetic number, because the mean of its divisors is an integer number (37699410).

Almost surely, 2^681020200 is an apocalyptic number.

It is an amenable number.

681020200 is an abundant number, since it is smaller than the sum of its proper divisors (1128551480).

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

681020200 is a wasteful number, since it uses less digits than its factorization.

681020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486466 (or 486457 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 681020200 is about 26096.3637313707. The cubic root of 681020200 is about 879.8054838666.

Adding to 681020200 its reverse (2020186), we get a palindrome (683040386).

The spelling of 681020200 in words is "six hundred eighty-one million, twenty thousand, two hundred".