664113 has 16 divisors (see below), whose sum is σ = 943616. Its totient is φ = 414720.

The previous prime is 664109. The next prime is 664117. The reversal of 664113 is 311466.

It is an interprime number because it is at equal distance from previous prime (664109) and next prime (664117).

It is not a de Polignac number, because 664113 - 2² = 664109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664113.

It is not an unprimeable number, because it can be changed into a prime (664117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3345 + ... + 3537.

It is an arithmetic number, because the mean of its divisors is an integer number (58976).

2⁶⁶⁴¹¹³ is an apocalyptic number.

It is an amenable number.

664113 is a deficient number, since it is larger than the sum of its proper divisors (279503).

664113 is a wasteful number, since it uses less digits than its factorization.

664113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264.

The product of its digits is 432, while the sum is 21.

The square root of 664113 is about 814.9312854468. The cubic root of 664113 is about 87.2463620840.

Adding to 664113 its reverse (311466), we get a palindrome (975579).

It can be divided in two parts, 664 and 113, that added together give a palindrome (777).

The spelling of 664113 in words is "six hundred sixty-four thousand, one hundred thirteen".