65605161 has 8 divisors (see below), whose sum is σ = 87814944. Its totient is φ = 43566080.

The previous prime is 65605151. The next prime is 65605187. The reversal of 65605161 is 16150656.

65605161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 65605161 - 2⁶ = 65605097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65605151) 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 7 ways as a sum of consecutive naturals, for example, 41775 + ... + 43316.

It is an arithmetic number, because the mean of its divisors is an integer number (10976868).

Almost surely, 2^65605161 is an apocalyptic number.

It is an amenable number.

65605161 is a deficient number, since it is larger than the sum of its proper divisors (22209783).

65605161 is a wasteful number, since it uses less digits than its factorization.

65605161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85351.

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

The square root of 65605161 is about 8099.7012907884. The cubic root of 65605161 is about 403.3165113005.

The spelling of 65605161 in words is "sixty-five million, six hundred five thousand, one hundred sixty-one".