67216216 has 8 divisors (see below), whose sum is σ = 126030420. Its totient is φ = 33608104.

The previous prime is 67216213. The next prime is 67216273. The reversal of 67216216 is 61261276.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a pancake number, because a pancake can be divided into 67216216 parts by 11594 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67216211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4201006 + ... + 4201021.

Almost surely, 2^67216216 is an apocalyptic number.

It is an amenable number.

67216216 is a deficient number, since it is larger than the sum of its proper divisors (58814204).

67216216 is a wasteful number, since it uses less digits than its factorization.

67216216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8402033 (or 8402029 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 67216216 is about 8198.5496278305. The cubic root of 67216216 is about 406.5912422453.

The spelling of 67216216 in words is "sixty-seven million, two hundred sixteen thousand, two hundred sixteen".