506783777 has 2 divisors, whose sum is σ = 506783778. Its totient is φ = 506783776.

The previous prime is 506783773. The next prime is 506783801. The reversal of 506783777 is 777387605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 501580816 + 5202961 = 22396^2 + 2281^2 .

It is a cyclic number.

It is not a de Polignac number, because 506783777 - 2² = 506783773 is a prime.

It is not a weakly prime, because it can be changed into another prime (506783773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253391888 + 253391889.

It is an arithmetic number, because the mean of its divisors is an integer number (253391889).

Almost surely, 2^506783777 is an apocalyptic number.

It is an amenable number.

506783777 is a deficient number, since it is larger than the sum of its proper divisors (1).

506783777 is an equidigital number, since it uses as much as digits as its factorization.

506783777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728720, while the sum is 50.

The square root of 506783777 is about 22511.8585860875. The cubic root of 506783777 is about 797.2739384745.

The spelling of 506783777 in words is "five hundred six million, seven hundred eighty-three thousand, seven hundred seventy-seven".