664112 has 10 divisors (see below), whose sum is σ = 1286748. Its totient is φ = 332048.

The previous prime is 664109. The next prime is 664117. The reversal of 664112 is 211466.

It is a happy number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20738 + ... + 20769.

2⁶⁶⁴¹¹² is an apocalyptic number.

It is an amenable number.

664112 is a deficient number, since it is larger than the sum of its proper divisors (622636).

664112 is a wasteful number, since it uses less digits than its factorization.

664112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41515 (or 41509 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 664112 is about 814.9306718979. The cubic root of 664112 is about 87.2463182930.

Adding to 664112 its reverse (211466), we get a palindrome (875578).

The spelling of 664112 in words is "six hundred sixty-four thousand, one hundred twelve".