681327296 has 56 divisors (see below), whose sum is σ = 1483577424. Its totient is φ = 308505600.

The previous prime is 681327271. The next prime is 681327313. The reversal of 681327296 is 692723186.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36371 + ... + 51821.

It is an arithmetic number, because the mean of its divisors is an integer number (26492454).

Almost surely, 2^681327296 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 681327296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741788712).

681327296 is an abundant number, since it is smaller than the sum of its proper divisors (802250128).

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

681327296 is a wasteful number, since it uses less digits than its factorization.

681327296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15529 (or 15519 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 681327296 is about 26102.2469530882. The cubic root of 681327296 is about 879.9377090895.

The spelling of 681327296 in words is "six hundred eighty-one million, three hundred twenty-seven thousand, two hundred ninety-six".