65481841 has 4 divisors (see below), whose sum is σ = 69333732. Its totient is φ = 61629952.

The previous prime is 65481833. The next prime is 65481883. The reversal of 65481841 is 14818456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53949025 + 11532816 = 7345^2 + 3396^2 .

It is a cyclic number.

It is not a de Polignac number, because 65481841 - 2³ = 65481833 is a prime.

It is a super-3 number, since 3×65481841³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65481841.

It is not an unprimeable number, because it can be changed into a prime (65481821) 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, 1925920 + ... + 1925953.

It is an arithmetic number, because the mean of its divisors is an integer number (17333433).

Almost surely, 2^65481841 is an apocalyptic number.

It is an amenable number.

65481841 is a deficient number, since it is larger than the sum of its proper divisors (3851891).

65481841 is a wasteful number, since it uses less digits than its factorization.

65481841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851890.

The product of its digits is 30720, while the sum is 37.

The square root of 65481841 is about 8092.0850835863. The cubic root of 65481841 is about 403.0636440563.

The spelling of 65481841 in words is "sixty-five million, four hundred eighty-one thousand, eight hundred forty-one".