65516165 has 16 divisors (see below), whose sum is σ = 92365056. Its totient is φ = 43982400.

The previous prime is 65516153. The next prime is 65516179. The reversal of 65516165 is 56161556.

It is not a de Polignac number, because 65516165 - 2⁴ = 65516149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45101 + ... + 46530.

It is an arithmetic number, because the mean of its divisors is an integer number (5772816).

Almost surely, 2^65516165 is an apocalyptic number.

65516165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65516165 is a deficient number, since it is larger than the sum of its proper divisors (26848891).

65516165 is a wasteful number, since it uses less digits than its factorization.

65516165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91660.

The product of its digits is 27000, while the sum is 35.

The square root of 65516165 is about 8094.2056435453. The cubic root of 65516165 is about 403.1340571649.

The spelling of 65516165 in words is "sixty-five million, five hundred sixteen thousand, one hundred sixty-five".