65444207 has 4 divisors (see below), whose sum is σ = 65530080. Its totient is φ = 65358336.

The previous prime is 65444201. The next prime is 65444233. The reversal of 65444207 is 70244456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65444207 - 2⁶ = 65444143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65444201) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 41783 + ... + 43320.

It is an arithmetic number, because the mean of its divisors is an integer number (16382520).

Almost surely, 2^65444207 is an apocalyptic number.

65444207 is a deficient number, since it is larger than the sum of its proper divisors (85873).

65444207 is an equidigital number, since it uses as much as digits as its factorization.

65444207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85872.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 65444207 is about 8089.7593907359. The cubic root of 65444207 is about 402.9864124459.

The spelling of 65444207 in words is "sixty-five million, four hundred forty-four thousand, two hundred seven".