67380066 has 64 divisors (see below), whose sum is σ = 164384640. Its totient is φ = 20329920.

The previous prime is 67380059. The next prime is 67380067. The reversal of 67380066 is 66008376.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 67380066.

It is not an unprimeable number, because it can be changed into a prime (67380067) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36301 + ... + 38111.

It is an arithmetic number, because the mean of its divisors is an integer number (2568510).

Almost surely, 2^67380066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67380066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82192320).

67380066 is an abundant number, since it is smaller than the sum of its proper divisors (97004574).

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

67380066 is a wasteful number, since it uses less digits than its factorization.

67380066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 67380066 is about 8208.5361666987. The cubic root of 67380066 is about 406.9213506626.

The spelling of 67380066 in words is "sixty-seven million, three hundred eighty thousand, sixty-six".