664004222 has 8 divisors (see below), whose sum is σ = 1138292976. Its totient is φ = 284573232.

The previous prime is 664004219. The next prime is 664004249. The reversal of 664004222 is 222400466.

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

It is a junction number, because it is equal to n+sod(n) for n = 664004191 and 664004200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23714423 + ... + 23714450.

It is an arithmetic number, because the mean of its divisors is an integer number (142286622).

Almost surely, 2^664004222 is an apocalyptic number.

664004222 is a deficient number, since it is larger than the sum of its proper divisors (474288754).

664004222 is a wasteful number, since it uses less digits than its factorization.

664004222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47428882.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 664004222 is about 25768.2793760080. The cubic root of 664004222 is about 872.4159833495.

Adding to 664004222 its reverse (222400466), we get a palindrome (886404688).

The spelling of 664004222 in words is "six hundred sixty-four million, four thousand, two hundred twenty-two".