664014311 has 4 divisors (see below), whose sum is σ = 680209824. Its totient is φ = 647818800.

The previous prime is 664014289. The next prime is 664014313. The reversal of 664014311 is 113410466.

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

It is a cyclic number.

It is not a de Polignac number, because 664014311 - 2²⁶ = 596905447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664014313) 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, 8097695 + ... + 8097776.

It is an arithmetic number, because the mean of its divisors is an integer number (170052456).

Almost surely, 2^664014311 is an apocalyptic number.

664014311 is a deficient number, since it is larger than the sum of its proper divisors (16195513).

664014311 is a wasteful number, since it uses less digits than its factorization.

664014311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16195512.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 664014311 is about 25768.4751392084. The cubic root of 664014311 is about 872.4204018758.

Adding to 664014311 its reverse (113410466), we get a palindrome (777424777).

The spelling of 664014311 in words is "six hundred sixty-four million, fourteen thousand, three hundred eleven".