1000605005 has 4 divisors (see below), whose sum is σ = 1200726012. Its totient is φ = 800484000.

The previous prime is 1000604981. The next prime is 1000605071. The reversal of 1000605005 is 5005060001.

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 326994889 + 673610116 = 18083^2 + 25954^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1000605005 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 100060496 + ... + 100060505.

It is an arithmetic number, because the mean of its divisors is an integer number (300181503).

Almost surely, 2^1000605005 is an apocalyptic number.

It is an amenable number.

1000605005 is a deficient number, since it is larger than the sum of its proper divisors (200121007).

1000605005 is an equidigital number, since it uses as much as digits as its factorization.

1000605005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200121006.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 1000605005 is about 31632.3411242355. The cubic root of 1000605005 is about 1000.2016276769.

Adding to 1000605005 its reverse (5005060001), we get a palindrome (6005665006).

The spelling of 1000605005 in words is "one billion, six hundred five thousand, five".