65116081 has 4 divisors (see below), whose sum is σ = 65142000. Its totient is φ = 65090164.

The previous prime is 65116067. The next prime is 65116087. The reversal of 65116081 is 18061156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65116081 - 2⁹ = 65115569 is a prime.

It is a super-2 number, since 2×65116081² = 8480208009597122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65116087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8731 + ... + 14368.

It is an arithmetic number, because the mean of its divisors is an integer number (16285500).

Almost surely, 2^65116081 is an apocalyptic number.

It is an amenable number.

65116081 is a deficient number, since it is larger than the sum of its proper divisors (25919).

65116081 is a wasteful number, since it uses less digits than its factorization.

65116081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25918.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 65116081 is about 8069.4535750570. The cubic root of 65116081 is about 402.3117821685.

The spelling of 65116081 in words is "sixty-five million, one hundred sixteen thousand, eighty-one".