505693 has 2 divisors, whose sum is σ = 505694. Its totient is φ = 505692.

The previous prime is 505691. The next prime is 505709. The reversal of 505693 is 396505.

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., 466489 + 39204 = 683^2 + 198^2 .

It is a cyclic number.

It is not a de Polignac number, because 505693 - 2¹ = 505691 is a prime.

Together with 505691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (505691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 252846 + 252847.

It is an arithmetic number, because the mean of its divisors is an integer number (252847).

2⁵⁰⁵⁶⁹³ is an apocalyptic number.

It is an amenable number.

505693 is a deficient number, since it is larger than the sum of its proper divisors (1).

505693 is an equidigital number, since it uses as much as digits as its factorization.

505693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 505693 is about 711.1209461125. The cubic root of 505693 is about 79.6701522919.

The spelling of 505693 in words is "five hundred five thousand, six hundred ninety-three".