681742183 has 2 divisors, whose sum is σ = 681742184. Its totient is φ = 681742182.

The previous prime is 681742169. The next prime is 681742231. The reversal of 681742183 is 381247186.

681742183 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 681742183 - 2²⁵ = 648187751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681742123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340871091 + 340871092.

It is an arithmetic number, because the mean of its divisors is an integer number (340871092).

Almost surely, 2^681742183 is an apocalyptic number.

681742183 is a deficient number, since it is larger than the sum of its proper divisors (1).

681742183 is an equidigital number, since it uses as much as digits as its factorization.

681742183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 681742183 is about 26110.1930862259. The cubic root of 681742183 is about 880.1162824128.

The spelling of 681742183 in words is "six hundred eighty-one million, seven hundred forty-two thousand, one hundred eighty-three".