626708161 has 2 divisors, whose sum is σ = 626708162. Its totient is φ = 626708160.

The previous prime is 626708153. The next prime is 626708167. The reversal of 626708161 is 161807626.

626708161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 622003600 + 4704561 = 24940^2 + 2169^2 .

It is a cyclic number.

It is not a de Polignac number, because 626708161 - 2³ = 626708153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 626708161.

It is not a weakly prime, because it can be changed into another prime (626708167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313354080 + 313354081.

It is an arithmetic number, because the mean of its divisors is an integer number (313354081).

Almost surely, 2^626708161 is an apocalyptic number.

It is an amenable number.

626708161 is a deficient number, since it is larger than the sum of its proper divisors (1).

626708161 is an equidigital number, since it uses as much as digits as its factorization.

626708161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 626708161 is about 25034.1399093318. The cubic root of 626708161 is about 855.7661752709.

The spelling of 626708161 in words is "six hundred twenty-six million, seven hundred eight thousand, one hundred sixty-one".