1000505065 has 16 divisors (see below), whose sum is σ = 1372804992. Its totient is φ = 685718784.

The previous prime is 1000505057. The next prime is 1000505081. The reversal of 1000505065 is 5605050001.

It is a cyclic number.

It is not a de Polignac number, because 1000505065 - 2³ = 1000505057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78682 + ... + 90508.

It is an arithmetic number, because the mean of its divisors is an integer number (85800312).

Almost surely, 2^1000505065 is an apocalyptic number.

It is an amenable number.

1000505065 is a deficient number, since it is larger than the sum of its proper divisors (372299927).

1000505065 is a wasteful number, since it uses less digits than its factorization.

1000505065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14256.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 1000505065 is about 31630.7613724362. The cubic root of 1000505065 is about 1000.1683266645.

Adding to 1000505065 its reverse (5605050001), we get a palindrome (6605555066).

The spelling of 1000505065 in words is "one billion, five hundred five thousand, sixty-five".