3630802561 has 8 divisors (see below), whose sum is σ = 3703524800. Its totient is φ = 3558625488.

The previous prime is 3630802559. The next prime is 3630802573. The reversal of 3630802561 is 1652080363.

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 3630802561 - 2¹ = 3630802559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3630802501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122826 + ... + 149491.

It is an arithmetic number, because the mean of its divisors is an integer number (462940600).

Almost surely, 2^3630802561 is an apocalyptic number.

It is an amenable number.

3630802561 is a deficient number, since it is larger than the sum of its proper divisors (72722239).

3630802561 is a wasteful number, since it uses less digits than its factorization.

3630802561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272583.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 3630802561 is about 60256.1412720728. The cubic root of 3630802561 is about 1536.9776221371.

It can be divided in two parts, 3630802 and 561, that added together give a palindrome (3631363).

The spelling of 3630802561 in words is "three billion, six hundred thirty million, eight hundred two thousand, five hundred sixty-one".