681296326 has 8 divisors (see below), whose sum is σ = 1029991680. Its totient is φ = 337965768.

The previous prime is 681296321. The next prime is 681296327. The reversal of 681296326 is 623692186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681296321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340881 + ... + 1341388.

It is an arithmetic number, because the mean of its divisors is an integer number (128748960).

Almost surely, 2^681296326 is an apocalyptic number.

681296326 is a deficient number, since it is larger than the sum of its proper divisors (348695354).

681296326 is a wasteful number, since it uses less digits than its factorization.

681296326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682398.

The product of its digits is 186624, while the sum is 43.

The square root of 681296326 is about 26101.6537023998. The cubic root of 681296326 is about 879.9243762493.

The spelling of 681296326 in words is "six hundred eighty-one million, two hundred ninety-six thousand, three hundred twenty-six".