65406344 has 16 divisors (see below), whose sum is σ = 129851100. Its totient is φ = 30779392.

The previous prime is 65406331. The next prime is 65406347. The reversal of 65406344 is 44360456.

It can be written as a sum of positive squares in 2 ways, for example, as 64480900 + 925444 = 8030^2 + 962^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 65406344.

It is not an unprimeable number, because it can be changed into a prime (65406347) 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, 240329 + ... + 240600.

Almost surely, 2^65406344 is an apocalyptic number.

It is an amenable number.

65406344 is a deficient number, since it is larger than the sum of its proper divisors (64444756).

65406344 is a wasteful number, since it uses less digits than its factorization.

65406344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480952 (or 480948 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 65406344 is about 8087.4188713087. The cubic root of 65406344 is about 402.9086810023.

The spelling of 65406344 in words is "sixty-five million, four hundred six thousand, three hundred forty-four".