67311216 has 80 divisors (see below), whose sum is σ = 220819200. Its totient is φ = 19230912.

The previous prime is 67311203. The next prime is 67311229. The reversal of 67311216 is 61211376.

It is an interprime number because it is at equal distance from previous prime (67311203) and next prime (67311229).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 67311216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8106 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (2760240).

Almost surely, 2^67311216 is an apocalyptic number.

It is an amenable number.

67311216 is an abundant number, since it is smaller than the sum of its proper divisors (153507984).

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

67311216 is a wasteful number, since it uses less digits than its factorization.

67311216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22283 (or 22271 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 67311216 is about 8204.3412898294. The cubic root of 67311216 is about 406.7827039052.

The spelling of 67311216 in words is "sixty-seven million, three hundred eleven thousand, two hundred sixteen".