65245409 has 8 divisors (see below), whose sum is σ = 66189312. Its totient is φ = 64308160.

The previous prime is 65245403. The next prime is 65245441. The reversal of 65245409 is 90454256.

It is a happy number.

65245409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65245409 - 2⁸ = 65245153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65245403) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 20072 + ... + 23094.

It is an arithmetic number, because the mean of its divisors is an integer number (8273664).

Almost surely, 2^65245409 is an apocalyptic number.

It is an amenable number.

65245409 is a deficient number, since it is larger than the sum of its proper divisors (943903).

65245409 is a wasteful number, since it uses less digits than its factorization.

65245409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3327.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 65245409 is about 8077.4630299371. The cubic root of 65245409 is about 402.5779518016.

The spelling of 65245409 in words is "sixty-five million, two hundred forty-five thousand, four hundred nine".