664029704 has 32 divisors (see below), whose sum is σ = 1387071000. Its totient is φ = 295905792.

The previous prime is 664029679. The next prime is 664029721. The reversal of 664029704 is 407920466.

It can be written as a sum of positive squares in 4 ways, for example, as 489736900 + 174292804 = 22130^2 + 13202^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107069 + ... + 113100.

Almost surely, 2^664029704 is an apocalyptic number.

It is an amenable number.

664029704 is an abundant number, since it is smaller than the sum of its proper divisors (723041296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664029704 is a wasteful number, since it uses less digits than its factorization.

664029704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220217 (or 220213 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 664029704 is about 25768.7738163848. The cubic root of 664029704 is about 872.4271432282.

The spelling of 664029704 in words is "six hundred sixty-four million, twenty-nine thousand, seven hundred four".