664004246 has 16 divisors (see below), whose sum is σ = 1017684000. Its totient is φ = 324811968.

The previous prime is 664004219. The next prime is 664004249. The reversal of 664004246 is 642400466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664004249) 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, 29330 + ... + 46778.

It is an arithmetic number, because the mean of its divisors is an integer number (63605250).

Almost surely, 2^664004246 is an apocalyptic number.

664004246 is a deficient number, since it is larger than the sum of its proper divisors (353679754).

664004246 is a wasteful number, since it uses less digits than its factorization.

664004246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17863.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 664004246 is about 25768.2798416968. The cubic root of 664004246 is about 872.4159938605.

The spelling of 664004246 in words is "six hundred sixty-four million, four thousand, two hundred forty-six".