65240305 has 48 divisors (see below), whose sum is σ = 94074624. Its totient is φ = 43084800.

The previous prime is 65240257. The next prime is 65240317. The reversal of 65240305 is 50304256.

It is not a de Polignac number, because 65240305 - 2⁷ = 65240177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65240305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 431980 + ... + 432130.

It is an arithmetic number, because the mean of its divisors is an integer number (1959888).

Almost surely, 2^65240305 is an apocalyptic number.

65240305 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65240305 is a deficient number, since it is larger than the sum of its proper divisors (28834319).

65240305 is a wasteful number, since it uses less digits than its factorization.

65240305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 65240305 is about 8077.1470829743. The cubic root of 65240305 is about 402.5674539419.

The spelling of 65240305 in words is "sixty-five million, two hundred forty thousand, three hundred five".