681740600 has 48 divisors (see below), whose sum is σ = 1587662520. Its totient is φ = 272246400.

The previous prime is 681740573. The next prime is 681740617. The reversal of 681740600 is 6047186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135734 + ... + 140666.

Almost surely, 2^681740600 is an apocalyptic number.

It is an amenable number.

681740600 is an abundant number, since it is smaller than the sum of its proper divisors (905921920).

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

681740600 is a wasteful number, since it uses less digits than its factorization.

681740600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640 (or 5631 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 681740600 is about 26110.1627723766. The cubic root of 681740600 is about 880.1156012046.

Adding to 681740600 its reverse (6047186), we get a palindrome (687787786).

The spelling of 681740600 in words is "six hundred eighty-one million, seven hundred forty thousand, six hundred".