505066 has 4 divisors (see below), whose sum is σ = 757602. Its totient is φ = 252532.

The previous prime is 505061. The next prime is 505067. The reversal of 505066 is 660505.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 275625 + 229441 = 525^2 + 479^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (505061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126265 + ... + 126268.

2⁵⁰⁵⁰⁶⁶ is an apocalyptic number.

505066 is a deficient number, since it is larger than the sum of its proper divisors (252536).

505066 is a wasteful number, since it uses less digits than its factorization.

505066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252535.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 505066 is about 710.6799560984. The cubic root of 505066 is about 79.6372114595.

The spelling of 505066 in words is "five hundred five thousand, sixty-six".