706080561821 has 2 divisors, whose sum is σ = 706080561822. Its totient is φ = 706080561820.

The previous prime is 706080561779. The next prime is 706080561829. The reversal of 706080561821 is 128165080607.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 706080561796 + 25 = 840286^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 706080561821 - 2¹⁰ = 706080560797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706080561829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353040280910 + 353040280911.

It is an arithmetic number, because the mean of its divisors is an integer number (353040280911).

Almost surely, 2^706080561821 is an apocalyptic number.

It is an amenable number.

706080561821 is a deficient number, since it is larger than the sum of its proper divisors (1).

706080561821 is an equidigital number, since it uses as much as digits as its factorization.

706080561821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The spelling of 706080561821 in words is "seven hundred six billion, eighty million, five hundred sixty-one thousand, eight hundred twenty-one".