67285221 has 16 divisors (see below), whose sum is σ = 93301248. Its totient is φ = 43084800.

The previous prime is 67285217. The next prime is 67285261. The reversal of 67285221 is 12258276.

It is not a de Polignac number, because 67285221 - 2² = 67285217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67285261) 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, 10101 + ... + 15381.

It is an arithmetic number, because the mean of its divisors is an integer number (5831328).

Almost surely, 2^67285221 is an apocalyptic number.

It is an amenable number.

67285221 is a deficient number, since it is larger than the sum of its proper divisors (26016027).

67285221 is a wasteful number, since it uses less digits than its factorization.

67285221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5452.

The product of its digits is 13440, while the sum is 33.

The square root of 67285221 is about 8202.7569145989. The cubic root of 67285221 is about 406.7303318611.

The spelling of 67285221 in words is "sixty-seven million, two hundred eighty-five thousand, two hundred twenty-one".