65561106 has 32 divisors (see below), whose sum is σ = 143881920. Its totient is φ = 19790784.

The previous prime is 65561101. The next prime is 65561107. The reversal of 65561106 is 60116556.

It is not an unprimeable number, because it can be changed into a prime (65561101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3796 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (4496310).

Almost surely, 2^65561106 is an apocalyptic number.

65561106 is an abundant number, since it is smaller than the sum of its proper divisors (78320814).

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

65561106 is a wasteful number, since it uses less digits than its factorization.

65561106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15930.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 65561106 is about 8096.9812893448. The cubic root of 65561106 is about 403.2262130815.

The spelling of 65561106 in words is "sixty-five million, five hundred sixty-one thousand, one hundred six".