66364223 has 8 divisors (see below), whose sum is σ = 69379296. Its totient is φ = 63360000.

The previous prime is 66364219. The next prime is 66364229. The reversal of 66364223 is 32246366.

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 66364223 - 2² = 66364219 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 66364223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66364229) 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 7 ways as a sum of consecutive naturals, for example, 11423 + ... + 16223.

It is an arithmetic number, because the mean of its divisors is an integer number (8672412).

Almost surely, 2^66364223 is an apocalyptic number.

66364223 is a deficient number, since it is larger than the sum of its proper divisors (3015073).

66364223 is a wasteful number, since it uses less digits than its factorization.

66364223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5425.

The product of its digits is 31104, while the sum is 32.

The square root of 66364223 is about 8146.4239393736. The cubic root of 66364223 is about 404.8660289494.

The spelling of 66364223 in words is "sixty-six million, three hundred sixty-four thousand, two hundred twenty-three".