65684444 has 48 divisors (see below), whose sum is σ = 139077120. Its totient is φ = 26516160.

The previous prime is 65684431. The next prime is 65684459. The reversal of 65684444 is 44448656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165254 + ... + 165650.

It is an arithmetic number, because the mean of its divisors is an integer number (2897440).

Almost surely, 2^65684444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65684444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69538560).

65684444 is an abundant number, since it is smaller than the sum of its proper divisors (73392676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65684444 is a wasteful number, since it uses less digits than its factorization.

65684444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 736 counting only the distinct ones).

The product of its digits is 368640, while the sum is 41.

The square root of 65684444 is about 8104.5940058710. The cubic root of 65684444 is about 403.4789135170.

It can be divided in two parts, 6568 and 4444, that multiplied together give a palindrome (29188192).

The spelling of 65684444 in words is "sixty-five million, six hundred eighty-four thousand, four hundred forty-four".