664624112 has 40 divisors (see below), whose sum is σ = 1369439136. Its totient is φ = 311392256.

The previous prime is 664624109. The next prime is 664624139. The reversal of 664624112 is 211426466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58133 + ... + 68619.

Almost surely, 2^664624112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664624112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684719568).

664624112 is an abundant number, since it is smaller than the sum of its proper divisors (704815024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664624112 is a wasteful number, since it uses less digits than its factorization.

664624112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10745 (or 10739 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 664624112 is about 25780.3047305496. The cubic root of 664624112 is about 872.6873841039.

The spelling of 664624112 in words is "six hundred sixty-four million, six hundred twenty-four thousand, one hundred twelve".