646073223 has 8 divisors (see below), whose sum is σ = 891135600. Its totient is φ = 415863168.

The previous prime is 646073209. The next prime is 646073269. The reversal of 646073223 is 322370646.

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

It is not a de Polignac number, because 646073223 - 2⁶ = 646073159 is a prime.

It is a super-3 number, since 3×646073223³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646073293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3712978 + ... + 3713151.

It is an arithmetic number, because the mean of its divisors is an integer number (111391950).

Almost surely, 2^646073223 is an apocalyptic number.

646073223 is a deficient number, since it is larger than the sum of its proper divisors (245062377).

646073223 is a wasteful number, since it uses less digits than its factorization.

646073223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7426161.

The product of its (nonzero) digits is 36288, while the sum is 33.

The square root of 646073223 is about 25417.9704736629. The cubic root of 646073223 is about 864.4912075756.

The spelling of 646073223 in words is "six hundred forty-six million, seventy-three thousand, two hundred twenty-three".