681351700 has 36 divisors (see below), whose sum is σ = 1502784892. Its totient is φ = 268070400.

The previous prime is 681351689. The next prime is 681351703. The reversal of 681351700 is 7153186.

681351700 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 239259024 + 442092676 = 15468^2 + 21026^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681351703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49749 + ... + 61948.

Almost surely, 2^681351700 is an apocalyptic number.

It is an amenable number.

681351700 is an abundant number, since it is smaller than the sum of its proper divisors (821433192).

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

681351700 is a wasteful number, since it uses less digits than its factorization.

681351700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111772 (or 111765 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 681351700 is about 26102.7144182363. The cubic root of 681351700 is about 879.9482149279.

The spelling of 681351700 in words is "six hundred eighty-one million, three hundred fifty-one thousand, seven hundred".