65314440 has 96 divisors (see below), whose sum is σ = 213272280. Its totient is φ = 17335296.

The previous prime is 65314439. The next prime is 65314451. The reversal of 65314440 is 4441356.

65314440 is a `hidden beast` number, since 653 + 1 + 4 + 4 + 4 + 0 = 666.

65314440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 63393444 + 1920996 = 7962^2 + 1386^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142692 + ... + 143148.

Almost surely, 2^65314440 is an apocalyptic number.

65314440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65314440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106636140).

65314440 is an abundant number, since it is smaller than the sum of its proper divisors (147957840).

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

65314440 is a wasteful number, since it uses less digits than its factorization.

65314440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 65314440 is about 8081.7349622467. The cubic root of 65314440 is about 402.7198803748.

Adding to 65314440 its reverse (4441356), we get a palindrome (69755796).

The spelling of 65314440 in words is "sixty-five million, three hundred fourteen thousand, four hundred forty".