664343014 has 4 divisors (see below), whose sum is σ = 996514524. Its totient is φ = 332171506.

The previous prime is 664343011. The next prime is 664343021. The reversal of 664343014 is 410343466.

It is a happy number.

664343014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664343011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166085752 + ... + 166085755.

It is an arithmetic number, because the mean of its divisors is an integer number (249128631).

Almost surely, 2^664343014 is an apocalyptic number.

664343014 is a deficient number, since it is larger than the sum of its proper divisors (332171510).

664343014 is a wasteful number, since it uses less digits than its factorization.

664343014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332171509.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 664343014 is about 25774.8523565122. The cubic root of 664343014 is about 872.5643344652.

The spelling of 664343014 in words is "six hundred sixty-four million, three hundred forty-three thousand, fourteen".