681924096 has 360 divisors, whose sum is σ = 2416162320. Its totient is φ = 188116992.

The previous prime is 681924091. The next prime is 681924101. The reversal of 681924096 is 690429186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (681924091) and next prime (681924101).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681924091) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 23514610 + ... + 23514638.

It is an arithmetic number, because the mean of its divisors is an integer number (6711562).

Almost surely, 2^681924096 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 681924096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1208081160).

681924096 is an abundant number, since it is smaller than the sum of its proper divisors (1734238224).

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

681924096 is an frugal number, since it uses more digits than its factorization.

681924096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 681924096 is about 26113.6764167744. The cubic root of 681924096 is about 880.1945575334.

The spelling of 681924096 in words is "six hundred eighty-one million, nine hundred twenty-four thousand, ninety-six".