664180223 has 8 divisors (see below), whose sum is σ = 792066048. Its totient is φ = 544545144.

The previous prime is 664180201. The next prime is 664180241. The reversal of 664180223 is 322081466.

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 664180223 - 2⁶ = 664180159 is a prime.

It is a super-2 number, since 2×664180223² = 882270737248659458, which contains 22 as substring.

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 664180223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664180723) 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, 2062511 + ... + 2062832.

It is an arithmetic number, because the mean of its divisors is an integer number (99008256).

Almost surely, 2^664180223 is an apocalyptic number.

664180223 is a deficient number, since it is larger than the sum of its proper divisors (127885825).

664180223 is a wasteful number, since it uses less digits than its factorization.

664180223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125373.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 664180223 is about 25771.6942205979. The cubic root of 664180223 is about 872.4930574183.

The spelling of 664180223 in words is "six hundred sixty-four million, one hundred eighty thousand, two hundred twenty-three".