664339834 has 8 divisors (see below), whose sum is σ = 996880500. Its totient is φ = 332046336.

The previous prime is 664339831. The next prime is 664339853. The reversal of 664339834 is 438933466.

664339834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 654080625 + 10259209 = 25575^2 + 3203^2 .

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

It is not an unprimeable number, because it can be changed into a prime (664339831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54919 + ... + 65914.

Almost surely, 2^664339834 is an apocalyptic number.

664339834 is a deficient number, since it is larger than the sum of its proper divisors (332540666).

664339834 is a wasteful number, since it uses less digits than its factorization.

664339834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123584.

The product of its digits is 1119744, while the sum is 46.

The square root of 664339834 is about 25774.7906684031. The cubic root of 664339834 is about 872.5629422331.

It can be divided in two parts, 66433 and 9834, that added together give a palindrome (76267).

The spelling of 664339834 in words is "six hundred sixty-four million, three hundred thirty-nine thousand, eight hundred thirty-four".