3630660205 has 4 divisors (see below), whose sum is σ = 4356792252. Its totient is φ = 2904528160.

The previous prime is 3630660179. The next prime is 3630660251. The reversal of 3630660205 is 5020660363.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5020660363 = 23 ⋅218289581.

It can be written as a sum of positive squares in 2 ways, for example, as 1278992169 + 2351668036 = 35763^2 + 48494^2 .

It is not a de Polignac number, because 3630660205 - 2¹⁵ = 3630627437 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent 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, 363066016 + ... + 363066025.

It is an arithmetic number, because the mean of its divisors is an integer number (1089198063).

Almost surely, 2^3630660205 is an apocalyptic number.

It is an amenable number.

3630660205 is a deficient number, since it is larger than the sum of its proper divisors (726132047).

3630660205 is an equidigital number, since it uses as much as digits as its factorization.

3630660205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726132046.

The product of its (nonzero) digits is 19440, while the sum is 31.

The square root of 3630660205 is about 60254.9600033060. The cubic root of 3630660205 is about 1536.9575346732.

The spelling of 3630660205 in words is "three billion, six hundred thirty million, six hundred sixty thousand, two hundred five".