65866634223 has 8 divisors (see below), whose sum is σ = 94577731248. Its totient is φ = 40533313344.

The previous prime is 65866634189. The next prime is 65866634227. The reversal of 65866634223 is 32243666856.

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

It is not a de Polignac number, because 65866634223 - 2⁹ = 65866633711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65866634227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844443990 + ... + 844444067.

It is an arithmetic number, because the mean of its divisors is an integer number (11822216406).

Almost surely, 2^65866634223 is an apocalyptic number.

65866634223 is a deficient number, since it is larger than the sum of its proper divisors (28711097025).

65866634223 is a wasteful number, since it uses less digits than its factorization.

65866634223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688888073.

The product of its digits is 7464960, while the sum is 51.

The spelling of 65866634223 in words is "sixty-five billion, eight hundred sixty-six million, six hundred thirty-four thousand, two hundred twenty-three".