3630580561 has 2 divisors, whose sum is σ = 3630580562. Its totient is φ = 3630580560.

The previous prime is 3630580559. The next prime is 3630580579. The reversal of 3630580561 is 1650850363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2988262225 + 642318336 = 54665^2 + 25344^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630580561 - 2¹ = 3630580559 is a prime.

It is a super-2 number, since 2×3630580561² = 26362230419822149442, which contains 22 as substring.

Together with 3630580559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3630580561.

It is not a weakly prime, because it can be changed into another prime (3630580511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815290280 + 1815290281.

It is an arithmetic number, because the mean of its divisors is an integer number (1815290281).

Almost surely, 2^3630580561 is an apocalyptic number.

It is an amenable number.

3630580561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630580561 is an equidigital number, since it uses as much as digits as its factorization.

3630580561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 3630580561 is about 60254.2991080305. The cubic root of 3630580561 is about 1536.9462960982.

The spelling of 3630580561 in words is "three billion, six hundred thirty million, five hundred eighty thousand, five hundred sixty-one".