65344272 has 80 divisors (see below), whose sum is σ = 193797120. Its totient is φ = 18585216.

The previous prime is 65344247. The next prime is 65344291. The reversal of 65344272 is 27244356.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 147283 + ... + 147725.

It is an arithmetic number, because the mean of its divisors is an integer number (2422464).

Almost surely, 2^65344272 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 65344272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96898560).

65344272 is an abundant number, since it is smaller than the sum of its proper divisors (128452848).

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

65344272 is a wasteful number, since it uses less digits than its factorization.

65344272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 894 counting only the distinct ones).

The product of its digits is 40320, while the sum is 33.

The square root of 65344272 is about 8083.5803948498. The cubic root of 65344272 is about 402.7811843827.

The spelling of 65344272 in words is "sixty-five million, three hundred forty-four thousand, two hundred seventy-two".