65080081 has 8 divisors (see below), whose sum is σ = 71064000. Its totient is φ = 59107440.

The previous prime is 65080021. The next prime is 65080109. The reversal of 65080081 is 18008056.

It is a happy number.

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 65080081 - 2⁷ = 65079953 is a prime.

It is a super-2 number, since 2×65080081² = 8470833885933122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65080021) 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 7 ways as a sum of consecutive naturals, for example, 13275 + ... + 17503.

It is an arithmetic number, because the mean of its divisors is an integer number (8883000).

Almost surely, 2^65080081 is an apocalyptic number.

It is an amenable number.

65080081 is a deficient number, since it is larger than the sum of its proper divisors (5983919).

65080081 is a wasteful number, since it uses less digits than its factorization.

65080081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5639.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 65080081 is about 8067.2226323562. Note that the first 3 decimals coincide. The cubic root of 65080081 is about 402.2376279616.

The spelling of 65080081 in words is "sixty-five million, eighty thousand, eighty-one".