65544841 has 4 divisors (see below), whose sum is σ = 65569684. Its totient is φ = 65520000.

The previous prime is 65544833. The next prime is 65544887. The reversal of 65544841 is 14844556.

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 10725625 + 54819216 = 3275^2 + 7404^2 .

It is a cyclic number.

It is not a de Polignac number, because 65544841 - 2³ = 65544833 is a prime.

It is a super-2 number, since 2×65544841² = 8592252363430562, which contains 22 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 65544841.

It is not an unprimeable number, because it can be changed into a prime (65544821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7920 + ... + 13921.

It is an arithmetic number, because the mean of its divisors is an integer number (16392421).

Almost surely, 2^65544841 is an apocalyptic number.

It is an amenable number.

65544841 is a deficient number, since it is larger than the sum of its proper divisors (24843).

65544841 is a wasteful number, since it uses less digits than its factorization.

65544841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24842.

The product of its digits is 76800, while the sum is 37.

The square root of 65544841 is about 8095.9768403819. The cubic root of 65544841 is about 403.1928649721.

The spelling of 65544841 in words is "sixty-five million, five hundred forty-four thousand, eight hundred forty-one".