668672112 has 20 divisors (see below), whose sum is σ = 1727403080. Its totient is φ = 222890688.

The previous prime is 668672099. The next prime is 668672113. The reversal of 668672112 is 211276866.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668672113) 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, 6965287 + ... + 6965382.

It is an arithmetic number, because the mean of its divisors is an integer number (86370154).

Almost surely, 2^668672112 is an apocalyptic number.

It is an amenable number.

668672112 is an abundant number, since it is smaller than the sum of its proper divisors (1058730968).

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

668672112 is a wasteful number, since it uses less digits than its factorization.

668672112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13930680 (or 13930674 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 668672112 is about 25858.6950946872. The cubic root of 668672112 is about 874.4555467905.

The spelling of 668672112 in words is "six hundred sixty-eight million, six hundred seventy-two thousand, one hundred twelve".