65894881 has 8 divisors (see below), whose sum is σ = 71027264. Its totient is φ = 60771600.

The previous prime is 65894833. The next prime is 65894897. The reversal of 65894881 is 18849856.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65894881 is a prime.

It is a super-2 number, since 2×65894881² = 8684270684008322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65894981) 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 7 ways as a sum of consecutive naturals, for example, 24556 + ... + 27106.

It is an arithmetic number, because the mean of its divisors is an integer number (8878408).

Almost surely, 2^65894881 is an apocalyptic number.

It is an amenable number.

65894881 is a deficient number, since it is larger than the sum of its proper divisors (5132383).

65894881 is a wasteful number, since it uses less digits than its factorization.

65894881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551.

The product of its digits is 552960, while the sum is 49.

The square root of 65894881 is about 8117.5661992989. The cubic root of 65894881 is about 403.9093369898.

It can be divided in two parts, 6589488 and 1, that added together give a square (6589489 = 2567²).

The spelling of 65894881 in words is "sixty-five million, eight hundred ninety-four thousand, eight hundred eighty-one".