67381216 has 24 divisors (see below), whose sum is σ = 151608240. Its totient is φ = 28877568.

The previous prime is 67381213. The next prime is 67381219. The reversal of 67381216 is 61218376.

It is an interprime number because it is at equal distance from previous prime (67381213) and next prime (67381219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67381211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150181 + ... + 150628.

It is an arithmetic number, because the mean of its divisors is an integer number (6317010).

Almost surely, 2^67381216 is an apocalyptic number.

It is an amenable number.

67381216 is an abundant number, since it is smaller than the sum of its proper divisors (84227024).

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

67381216 is a wasteful number, since it uses less digits than its factorization.

67381216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300826 (or 300818 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 67381216 is about 8208.6062154302. The cubic root of 67381216 is about 406.9236656741.

The spelling of 67381216 in words is "sixty-seven million, three hundred eighty-one thousand, two hundred sixteen".