67308066 has 108 divisors (see below), whose sum is σ = 182343798. Its totient is φ = 17829504.

The previous prime is 67308061. The next prime is 67308067. The reversal of 67308066 is 66080376.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49491225 + 17816841 = 7035^2 + 4221^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 67308066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67308061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 1004565 + ... + 1004631.

Almost surely, 2^67308066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67308066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91171899).

67308066 is an abundant number, since it is smaller than the sum of its proper divisors (115035732).

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

67308066 is a wasteful number, since it uses less digits than its factorization.

67308066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 96 counting only the distinct ones).

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

The square root of 67308066 is about 8204.1493160473. The cubic root of 67308066 is about 406.7763583282.

The spelling of 67308066 in words is "sixty-seven million, three hundred eight thousand, sixty-six".