681170911 has 2 divisors, whose sum is σ = 681170912. Its totient is φ = 681170910.

The previous prime is 681170899. The next prime is 681170923. The reversal of 681170911 is 119071186.

It is a balanced prime because it is at equal distance from previous prime (681170899) and next prime (681170923).

It is a cyclic number.

It is not a de Polignac number, because 681170911 - 2¹¹ = 681168863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681170951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340585455 + 340585456.

It is an arithmetic number, because the mean of its divisors is an integer number (340585456).

Almost surely, 2^681170911 is an apocalyptic number.

681170911 is a deficient number, since it is larger than the sum of its proper divisors (1).

681170911 is an equidigital number, since it uses as much as digits as its factorization.

681170911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 34.

The square root of 681170911 is about 26099.2511578398. The cubic root of 681170911 is about 879.8703799271.

The spelling of 681170911 in words is "six hundred eighty-one million, one hundred seventy thousand, nine hundred eleven".