66096439 has 4 divisors (see below), whose sum is σ = 66738256. Its totient is φ = 65454624.

The previous prime is 66096431. The next prime is 66096449. The reversal of 66096439 is 93469066.

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 66096439 - 2³ = 66096431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66096395 and 66096404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66096431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320754 + ... + 320959.

It is an arithmetic number, because the mean of its divisors is an integer number (16684564).

Almost surely, 2^66096439 is an apocalyptic number.

66096439 is a deficient number, since it is larger than the sum of its proper divisors (641817).

66096439 is a wasteful number, since it uses less digits than its factorization.

66096439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641816.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 66096439 is about 8129.9716481670. The cubic root of 66096439 is about 404.3207411908.

The spelling of 66096439 in words is "sixty-six million, ninety-six thousand, four hundred thirty-nine".