65330161 has 6 divisors (see below), whose sum is σ = 70742310. Its totient is φ = 60304608.

The previous prime is 65330149. The next prime is 65330191. The reversal of 65330161 is 16103356.

It can be written as a sum of positive squares in 3 ways, for example, as 1089936 + 64240225 = 1044^2 + 8015^2 .

It is not a de Polignac number, because 65330161 - 2⁷ = 65330033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65330101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 193116 + ... + 193453.

It is an arithmetic number, because the mean of its divisors is an integer number (11790385).

Almost surely, 2^65330161 is an apocalyptic number.

It is an amenable number.

65330161 is a deficient number, since it is larger than the sum of its proper divisors (5412149).

65330161 is a wasteful number, since it uses less digits than its factorization.

65330161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386595 (or 386582 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 65330161 is about 8082.7075290400. The cubic root of 65330161 is about 402.7521889595.

The spelling of 65330161 in words is "sixty-five million, three hundred thirty thousand, one hundred sixty-one".