667730112 has 112 divisors (see below), whose sum is σ = 2106972672. Its totient is φ = 182476800.

The previous prime is 667730087. The next prime is 667730137. The reversal of 667730112 is 211037766.

It is an interprime number because it is at equal distance from previous prime (667730087) and next prime (667730137).

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20112 + ... + 41712.

It is an arithmetic number, because the mean of its divisors is an integer number (18812256).

Almost surely, 2^667730112 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 667730112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1053486336).

667730112 is an abundant number, since it is smaller than the sum of its proper divisors (1439242560).

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

667730112 is a wasteful number, since it uses less digits than its factorization.

667730112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21646 (or 21636 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 667730112 is about 25840.4742990526. The cubic root of 667730112 is about 874.0447205027.

Adding to 667730112 its reverse (211037766), we get a palindrome (878767878).

The spelling of 667730112 in words is "six hundred sixty-seven million, seven hundred thirty thousand, one hundred twelve".