681600896 has 32 divisors (see below), whose sum is σ = 1364366280. Its totient is φ = 339171840.

The previous prime is 681600859. The next prime is 681600911. The reversal of 681600896 is 698006186.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14390 + ... + 39626.

Almost surely, 2^681600896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 681600896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (682183140).

681600896 is an abundant number, since it is smaller than the sum of its proper divisors (682765384).

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

681600896 is a wasteful number, since it uses less digits than its factorization.

681600896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25462 (or 25450 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 681600896 is about 26107.4873551631. The cubic root of 681600896 is about 880.0554785960.

The spelling of 681600896 in words is "six hundred eighty-one million, six hundred thousand, eight hundred ninety-six".