681296347 has 2 divisors, whose sum is σ = 681296348. Its totient is φ = 681296346.

The previous prime is 681296339. The next prime is 681296351. The reversal of 681296347 is 743692186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681296347 - 2³ = 681296339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681296297 and 681296306.

It is not a weakly prime, because it can be changed into another prime (681296327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340648173 + 340648174.

It is an arithmetic number, because the mean of its divisors is an integer number (340648174).

Almost surely, 2^681296347 is an apocalyptic number.

681296347 is a deficient number, since it is larger than the sum of its proper divisors (1).

681296347 is an equidigital number, since it uses as much as digits as its factorization.

681296347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 681296347 is about 26101.6541046731. The cubic root of 681296347 is about 879.9243852901.

The spelling of 681296347 in words is "six hundred eighty-one million, two hundred ninety-six thousand, three hundred forty-seven".