65444208 has 80 divisors (see below), whose sum is σ = 180583680. Its totient is φ = 20362752.

The previous prime is 65444201. The next prime is 65444233. The reversal of 65444208 is 80244456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65444201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66085 + ... + 67067.

It is an arithmetic number, because the mean of its divisors is an integer number (2257296).

Almost surely, 2^65444208 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 65444208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90291840).

65444208 is an abundant number, since it is smaller than the sum of its proper divisors (115139472).

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

65444208 is a wasteful number, since it uses less digits than its factorization.

65444208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 65444208 is about 8089.7594525425. The cubic root of 65444208 is about 402.9864144985.

The spelling of 65444208 in words is "sixty-five million, four hundred forty-four thousand, two hundred eight".