65161064 has 8 divisors (see below), whose sum is σ = 122177010. Its totient is φ = 32580528.

The previous prime is 65161049. The next prime is 65161069. The reversal of 65161064 is 46016156.

65161064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 60062500 + 5098564 = 7750^2 + 2258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×65161064² = 8491928523224192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65161069) 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 as a sum of consecutive naturals, namely, 4072559 + ... + 4072574.

Almost surely, 2^65161064 is an apocalyptic number.

It is an amenable number.

65161064 is a deficient number, since it is larger than the sum of its proper divisors (57015946).

65161064 is a wasteful number, since it uses less digits than its factorization.

65161064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145139 (or 8145135 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 65161064 is about 8072.2403333895. The cubic root of 65161064 is about 402.4044015081.

The spelling of 65161064 in words is "sixty-five million, one hundred sixty-one thousand, sixty-four".