67228686 has 48 divisors (see below), whose sum is σ = 169884000. Its totient is φ = 19206432.

The previous prime is 67228621. The next prime is 67228697. The reversal of 67228686 is 68682276.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 730 + ... + 11618.

It is an arithmetic number, because the mean of its divisors is an integer number (3539250).

Almost surely, 2^67228686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67228686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84942000).

67228686 is an abundant number, since it is smaller than the sum of its proper divisors (102655314).

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

67228686 is a wasteful number, since it uses less digits than its factorization.

67228686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10918 (or 10901 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 67228686 is about 8199.3100929286. The cubic root of 67228686 is about 406.6163843890.

The spelling of 67228686 in words is "sixty-seven million, two hundred twenty-eight thousand, six hundred eighty-six".