65561202 has 48 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 18503136.

The previous prime is 65561189. The next prime is 65561207. The reversal of 65561202 is 20216556.

65561202 is a `hidden beast` number, since 655 + 6 + 1 + 2 + 0 + 2 = 666.

65561202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (65561207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7324 + ... + 13592.

It is an arithmetic number, because the mean of its divisors is an integer number (3423420).

Almost surely, 2^65561202 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65561202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82162080).

65561202 is an abundant number, since it is smaller than the sum of its proper divisors (98762958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65561202 is a wasteful number, since it uses less digits than its factorization.

65561202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367 (or 6364 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65561202 is about 8096.9872174779. The cubic root of 65561202 is about 403.2264098938.

Adding to 65561202 its reverse (20216556), we get a palindrome (85777758).

The spelling of 65561202 in words is "sixty-five million, five hundred sixty-one thousand, two hundred two".