67305380 has 24 divisors (see below), whose sum is σ = 149656248. Its totient is φ = 25338368.

The previous prime is 67305379. The next prime is 67305409. The reversal of 67305380 is 8350376.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5494336 + 61811044 = 2344^2 + 7862^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98639 + ... + 99318.

It is an arithmetic number, because the mean of its divisors is an integer number (6235677).

Almost surely, 2^67305380 is an apocalyptic number.

It is an amenable number.

67305380 is an abundant number, since it is smaller than the sum of its proper divisors (82350868).

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

67305380 is a wasteful number, since it uses less digits than its factorization.

67305380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197983 (or 197981 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 67305380 is about 8203.9856167597. The cubic root of 67305380 is about 406.7709473084.

The spelling of 67305380 in words is "sixty-seven million, three hundred five thousand, three hundred eighty".