67220316 has 18 divisors (see below), whose sum is σ = 169918112. Its totient is φ = 22406760.

The previous prime is 67220311. The next prime is 67220327. The reversal of 67220316 is 61302276.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 67220316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67220311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 933580 + ... + 933651.

Almost surely, 2^67220316 is an apocalyptic number.

It is an amenable number.

67220316 is an abundant number, since it is smaller than the sum of its proper divisors (102697796).

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

67220316 is a wasteful number, since it uses less digits than its factorization.

67220316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867241 (or 1867236 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 67220316 is about 8198.7996682441. The cubic root of 67220316 is about 406.5995090510.

The spelling of 67220316 in words is "sixty-seven million, two hundred twenty thousand, three hundred sixteen".