1005630205 has 8 divisors (see below), whose sum is σ = 1210876632. Its totient is φ = 801757248.

The previous prime is 1005630193. The next prime is 1005630221. The reversal of 1005630205 is 5020365001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 126922756 + 878707449 = 11266^2 + 29643^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1005630205 - 2⁷ = 1005630077 is a prime.

It is a super-2 number, since 2×1005630205² = 2022584218416684050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341754 + ... + 344683.

It is an arithmetic number, because the mean of its divisors is an integer number (151359579).

Almost surely, 2^1005630205 is an apocalyptic number.

It is an amenable number.

1005630205 is a deficient number, since it is larger than the sum of its proper divisors (205246427).

1005630205 is an equidigital number, since it uses as much as digits as its factorization.

1005630205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686735.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1005630205 is about 31711.6730085311. The cubic root of 1005630205 is about 1001.8732238414.

Adding to 1005630205 its reverse (5020365001), we get a palindrome (6025995206).

The spelling of 1005630205 in words is "one billion, five million, six hundred thirty thousand, two hundred five".