65881067 has 16 divisors (see below), whose sum is σ = 77137920. Its totient is φ = 55097952.

The previous prime is 65881051. The next prime is 65881097. The reversal of 65881067 is 76018856.

It is not a de Polignac number, because 65881067 - 2⁴ = 65881051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65881007) 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 15 ways as a sum of consecutive naturals, for example, 88298 + ... + 89040.

It is an arithmetic number, because the mean of its divisors is an integer number (4821120).

Almost surely, 2^65881067 is an apocalyptic number.

65881067 is a deficient number, since it is larger than the sum of its proper divisors (11256853).

65881067 is a wasteful number, since it uses less digits than its factorization.

65881067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 65881067 is about 8116.7152839064. The cubic root of 65881067 is about 403.8811102472.

The spelling of 65881067 in words is "sixty-five million, eight hundred eighty-one thousand, sixty-seven".