67228081 has 16 divisors (see below), whose sum is σ = 73241280. Its totient is φ = 61470720.

The previous prime is 67228079. The next prime is 67228087. The reversal of 67228081 is 18082276.

It is a cyclic number.

It is not a de Polignac number, because 67228081 - 2¹ = 67228079 is a prime.

It is a super-2 number, since 2×67228081² = 9039229749885122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67228087) 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, 96946 + ... + 97636.

It is an arithmetic number, because the mean of its divisors is an integer number (4577580).

Almost surely, 2^67228081 is an apocalyptic number.

It is an amenable number.

67228081 is a deficient number, since it is larger than the sum of its proper divisors (6013199).

67228081 is a wasteful number, since it uses less digits than its factorization.

67228081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 67228081 is about 8199.2731994976. The cubic root of 67228081 is about 406.6151646534.

The spelling of 67228081 in words is "sixty-seven million, two hundred twenty-eight thousand, eighty-one".