67071216 has 80 divisors (see below), whose sum is σ = 183738240. Its totient is φ = 21024000.

The previous prime is 67071157. The next prime is 67071217. The reversal of 67071216 is 61217076.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67071217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228766 + ... + 229058.

It is an arithmetic number, because the mean of its divisors is an integer number (2296728).

Almost surely, 2^67071216 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 67071216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91869120).

67071216 is an abundant number, since it is smaller than the sum of its proper divisors (116667024).

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

67071216 is a wasteful number, since it uses less digits than its factorization.

67071216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 67071216 is about 8189.7018260740. The cubic root of 67071216 is about 406.2986631726.

The spelling of 67071216 in words is "sixty-seven million, seventy-one thousand, two hundred sixteen".