67122666 has 48 divisors (see below), whose sum is σ = 158645760. Its totient is φ = 20386080.

The previous prime is 67122659. The next prime is 67122691. The reversal of 67122666 is 66622176.

It is a self number, because there is not a number n which added to its sum of digits gives 67122666.

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, 16671 + ... + 20301.

It is an arithmetic number, because the mean of its divisors is an integer number (3305120).

Almost surely, 2^67122666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67122666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79322880).

67122666 is an abundant number, since it is smaller than the sum of its proper divisors (91523094).

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

67122666 is a wasteful number, since it uses less digits than its factorization.

67122666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731 (or 3728 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 67122666 is about 8192.8423639174. The cubic root of 67122666 is about 406.4025265216.

The spelling of 67122666 in words is "sixty-seven million, one hundred twenty-two thousand, six hundred sixty-six".