687601141 has 2 divisors, whose sum is σ = 687601142. Its totient is φ = 687601140.

The previous prime is 687601097. The next prime is 687601151. The reversal of 687601141 is 141106786.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 672313041 + 15288100 = 25929^2 + 3910^2 .

It is a cyclic number.

It is not a de Polignac number, because 687601141 - 2⁹ = 687600629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 687601097 and 687601106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (687601151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343800570 + 343800571.

It is an arithmetic number, because the mean of its divisors is an integer number (343800571).

Almost surely, 2^687601141 is an apocalyptic number.

It is an amenable number.

687601141 is a deficient number, since it is larger than the sum of its proper divisors (1).

687601141 is an equidigital number, since it uses as much as digits as its factorization.

687601141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 687601141 is about 26222.1498165196. The cubic root of 687601141 is about 882.6303620682.

The spelling of 687601141 in words is "six hundred eighty-seven million, six hundred one thousand, one hundred forty-one".