67717216 has 72 divisors (see below), whose sum is σ = 163318680. Its totient is φ = 27482112.

The previous prime is 67717213. The next prime is 67717219. The reversal of 67717216 is 61271776.

It is an interprime number because it is at equal distance from previous prime (67717213) and next prime (67717219).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67717211) 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 11 ways as a sum of consecutive naturals, for example, 28656 + ... + 30928.

It is an arithmetic number, because the mean of its divisors is an integer number (2268315).

Almost surely, 2^67717216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67717216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81659340).

67717216 is an abundant number, since it is smaller than the sum of its proper divisors (95601464).

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

67717216 is a wasteful number, since it uses less digits than its factorization.

67717216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2301 counting only the distinct ones).

The product of its digits is 24696, while the sum is 37.

The square root of 67717216 is about 8229.0470894266. The cubic root of 67717216 is about 407.5989266389.

The spelling of 67717216 in words is "sixty-seven million, seven hundred seventeen thousand, two hundred sixteen".