65830881 has 8 divisors (see below), whose sum is σ = 90146944. Its totient is φ = 42701040.

The previous prime is 65830847. The next prime is 65830883. The reversal of 65830881 is 18803856.

It is a happy number.

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

It is not a de Polignac number, because 65830881 - 2⁷ = 65830753 is a prime.

It is a super-3 number, since 3×65830881³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65830883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296425 + ... + 296646.

It is an arithmetic number, because the mean of its divisors is an integer number (11268368).

Almost surely, 2^65830881 is an apocalyptic number.

It is an amenable number.

65830881 is a deficient number, since it is larger than the sum of its proper divisors (24316063).

65830881 is a wasteful number, since it uses less digits than its factorization.

65830881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593111.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 65830881 is about 8113.6231734041. The cubic root of 65830881 is about 403.7785298080.

The spelling of 65830881 in words is "sixty-five million, eight hundred thirty thousand, eight hundred eighty-one".