1000508065 has 4 divisors (see below), whose sum is σ = 1200609684. Its totient is φ = 800406448.

The previous prime is 1000508039. The next prime is 1000508071. The reversal of 1000508065 is 5608050001.

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 324144016 + 676364049 = 18004^2 + 26007^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000508065 - 2¹⁵ = 1000475297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100050802 + ... + 100050811.

It is an arithmetic number, because the mean of its divisors is an integer number (300152421).

Almost surely, 2^1000508065 is an apocalyptic number.

It is an amenable number.

1000508065 is a deficient number, since it is larger than the sum of its proper divisors (200101619).

1000508065 is an equidigital number, since it uses as much as digits as its factorization.

1000508065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200101618.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1000508065 is about 31630.8087945914. The cubic root of 1000508065 is about 1000.1693263270.

Adding to 1000508065 its reverse (5608050001), we get a palindrome (6608558066).

The spelling of 1000508065 in words is "one billion, five hundred eight thousand, sixty-five".