67667412 has 48 divisors (see below), whose sum is σ = 169102080. Its totient is φ = 20984832.

The previous prime is 67667401. The next prime is 67667419. The reversal of 67667412 is 21476676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67667419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16293 + ... + 20019.

It is an arithmetic number, because the mean of its divisors is an integer number (3522960).

Almost surely, 2^67667412 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 67667412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84551040).

67667412 is an abundant number, since it is smaller than the sum of its proper divisors (101434668).

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

67667412 is a wasteful number, since it uses less digits than its factorization.

67667412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3840 (or 3838 counting only the distinct ones).

The product of its digits is 84672, while the sum is 39.

The square root of 67667412 is about 8226.0204230235. The cubic root of 67667412 is about 407.4989764989.

The spelling of 67667412 in words is "sixty-seven million, six hundred sixty-seven thousand, four hundred twelve".