245366773 has 2 divisors, whose sum is σ = 245366774. Its totient is φ = 245366772.

The previous prime is 245366761. The next prime is 245366777. The reversal of 245366773 is 377663542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226893969 + 18472804 = 15063^2 + 4298^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245366773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245366777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122683386 + 122683387.

It is an arithmetic number, because the mean of its divisors is an integer number (122683387).

Almost surely, 2^245366773 is an apocalyptic number.

It is an amenable number.

245366773 is a deficient number, since it is larger than the sum of its proper divisors (1).

245366773 is an equidigital number, since it uses as much as digits as its factorization.

245366773 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 43.

The square root of 245366773 is about 15664.1875946376. The cubic root of 245366773 is about 626.0445661978.

The spelling of 245366773 in words is "two hundred forty-five million, three hundred sixty-six thousand, seven hundred seventy-three".