1005500065 has 4 divisors (see below), whose sum is σ = 1206600084. Its totient is φ = 804400048.

The previous prime is 1005500059. The next prime is 1005500077. The reversal of 1005500065 is 5600055001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 527115681 + 478384384 = 22959^2 + 21872^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005500065 - 2²³ = 997111457 is a prime.

It is a super-2 number, since 2×1005500065² = 2022060761430008450, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 100550002 + ... + 100550011.

It is an arithmetic number, because the mean of its divisors is an integer number (301650021).

Almost surely, 2^1005500065 is an apocalyptic number.

It is an amenable number.

1005500065 is a deficient number, since it is larger than the sum of its proper divisors (201100019).

1005500065 is an equidigital number, since it uses as much as digits as its factorization.

1005500065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201100018.

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

The square root of 1005500065 is about 31709.6210163414. The cubic root of 1005500065 is about 1001.8300040424.

Adding to 1005500065 its reverse (5600055001), we get a palindrome (6605555066).

The spelling of 1005500065 in words is "one billion, five million, five hundred thousand, sixty-five".