505636 has 12 divisors (see below), whose sum is σ = 896112. Its totient is φ = 249608.

The previous prime is 505633. The next prime is 505639. The reversal of 505636 is 636505.

It is an interprime number because it is at equal distance from previous prime (505633) and next prime (505639).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 505636.

It is not an unprimeable number, because it can be changed into a prime (505633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 430 + ... + 1093.

It is an arithmetic number, because the mean of its divisors is an integer number (74676).

2⁵⁰⁵⁶³⁶ is an apocalyptic number.

It is an amenable number.

505636 is a deficient number, since it is larger than the sum of its proper divisors (390476).

505636 is a wasteful number, since it uses less digits than its factorization.

505636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 505636 is about 711.0808674124. The cubic root of 505636 is about 79.6671587963.

The spelling of 505636 in words is "five hundred five thousand, six hundred thirty-six".