706663366637 has 2 divisors, whose sum is σ = 706663366638. Its totient is φ = 706663366636.

The previous prime is 706663366561. The next prime is 706663366751. The reversal of 706663366637 is 736663366607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 602519040841 + 104144325796 = 776221^2 + 322714^2 .

It is a cyclic number.

It is not a de Polignac number, because 706663366637 - 2¹⁰ = 706663365613 is a prime.

It is a super-2 number, since 2×706663366637² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706663366537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353331683318 + 353331683319.

It is an arithmetic number, because the mean of its divisors is an integer number (353331683319).

Almost surely, 2^706663366637 is an apocalyptic number.

It is an amenable number.

706663366637 is a deficient number, since it is larger than the sum of its proper divisors (1).

706663366637 is an equidigital number, since it uses as much as digits as its factorization.

706663366637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61725888, while the sum is 59.

The spelling of 706663366637 in words is "seven hundred six billion, six hundred sixty-three million, three hundred sixty-six thousand, six hundred thirty-seven".