212748773 has 2 divisors, whose sum is σ = 212748774. Its totient is φ = 212748772.

The previous prime is 212748769. The next prime is 212748793. The reversal of 212748773 is 377847212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211498849 + 1249924 = 14543^2 + 1118^2 .

It is a cyclic number.

It is not a de Polignac number, because 212748773 - 2² = 212748769 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212748773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212748793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106374386 + 106374387.

It is an arithmetic number, because the mean of its divisors is an integer number (106374387).

Almost surely, 2^212748773 is an apocalyptic number.

It is an amenable number.

212748773 is a deficient number, since it is larger than the sum of its proper divisors (1).

212748773 is an equidigital number, since it uses as much as digits as its factorization.

212748773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 131712, while the sum is 41.

The square root of 212748773 is about 14585.9100847359. The cubic root of 212748773 is about 596.9743729103.

The spelling of 212748773 in words is "two hundred twelve million, seven hundred forty-eight thousand, seven hundred seventy-three".