65045444 has 12 divisors (see below), whose sum is σ = 113975568. Its totient is φ = 32481000.

The previous prime is 65045437. The next prime is 65045447. The reversal of 65045444 is 44454056.

It is a self number, because there is not a number n which added to its sum of digits gives 65045444.

It is not an unprimeable number, because it can be changed into a prime (65045447) 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, 6782 + ... + 13269.

It is an arithmetic number, because the mean of its divisors is an integer number (9497964).

Almost surely, 2^65045444 is an apocalyptic number.

It is an amenable number.

65045444 is a deficient number, since it is larger than the sum of its proper divisors (48930124).

65045444 is a wasteful number, since it uses less digits than its factorization.

65045444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20866 (or 20864 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 65045444 is about 8065.0755731115. The cubic root of 65045444 is about 402.1662554980.

The spelling of 65045444 in words is "sixty-five million, forty-five thousand, four hundred forty-four".