706705965421 has 2 divisors, whose sum is σ = 706705965422. Its totient is φ = 706705965420.

The previous prime is 706705965419. The next prime is 706705965457. The reversal of 706705965421 is 124569507607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693865676196 + 12840289225 = 832986^2 + 113315^2 .

It is a cyclic number.

It is not a de Polignac number, because 706705965421 - 2¹ = 706705965419 is a prime.

Together with 706705965419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706705965491) 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, 353352982710 + 353352982711.

It is an arithmetic number, because the mean of its divisors is an integer number (353352982711).

Almost surely, 2^706705965421 is an apocalyptic number.

It is an amenable number.

706705965421 is a deficient number, since it is larger than the sum of its proper divisors (1).

706705965421 is an equidigital number, since it uses as much as digits as its factorization.

706705965421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 52.

The spelling of 706705965421 in words is "seven hundred six billion, seven hundred five million, nine hundred sixty-five thousand, four hundred twenty-one".