505677773 has 2 divisors, whose sum is σ = 505677774. Its totient is φ = 505677772.

The previous prime is 505677769. The next prime is 505677787. The reversal of 505677773 is 377776505.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 495418564 + 10259209 = 22258^2 + 3203^2 .

It is a cyclic number.

It is not a de Polignac number, because 505677773 - 2² = 505677769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505677763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252838886 + 252838887.

It is an arithmetic number, because the mean of its divisors is an integer number (252838887).

Almost surely, 2^505677773 is an apocalyptic number.

It is an amenable number.

505677773 is a deficient number, since it is larger than the sum of its proper divisors (1).

505677773 is an equidigital number, since it uses as much as digits as its factorization.

505677773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080450, while the sum is 47.

The square root of 505677773 is about 22487.2802490652. The cubic root of 505677773 is about 796.6935263047.

The spelling of 505677773 in words is "five hundred five million, six hundred seventy-seven thousand, seven hundred seventy-three".