511000065 has 24 divisors (see below), whose sum is σ = 887822208. Its totient is φ = 271890720.

The previous prime is 511000051. The next prime is 511000109. The reversal of 511000065 is 560000115.

It is not a de Polignac number, because 511000065 - 2⁵ = 511000033 is a prime.

It is a super-2 number, since 2×511000065² = 522242132860008450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6222 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (36992592).

Almost surely, 2^511000065 is an apocalyptic number.

It is an amenable number.

511000065 is a deficient number, since it is larger than the sum of its proper divisors (376822143).

511000065 is a wasteful number, since it uses less digits than its factorization.

511000065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26789 (or 26786 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 511000065 is about 22605.3105486299. The cubic root of 511000065 is about 799.4788611124.

Subtracting 511000065 from its reverse (560000115), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 511000065 in words is "five hundred eleven million, sixty-five", and thus it is an aban number.