681296359 has 4 divisors (see below), whose sum is σ = 682244640. Its totient is φ = 680348080.

The previous prime is 681296353. The next prime is 681296377. The reversal of 681296359 is 953692186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953692186 = 2 ⋅476846093.

It is a cyclic number.

It is not a de Polignac number, because 681296359 - 2³ = 681296351 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681296351) 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, 473062 + ... + 474499.

It is an arithmetic number, because the mean of its divisors is an integer number (170561160).

Almost surely, 2^681296359 is an apocalyptic number.

681296359 is a deficient number, since it is larger than the sum of its proper divisors (948281).

681296359 is an equidigital number, since it uses as much as digits as its factorization.

681296359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948280.

The product of its digits is 699840, while the sum is 49.

The square root of 681296359 is about 26101.6543345436. The cubic root of 681296359 is about 879.9243904563.

The spelling of 681296359 in words is "six hundred eighty-one million, two hundred ninety-six thousand, three hundred fifty-nine".