67470221 has 8 divisors (see below), whose sum is σ = 83040384. Its totient is φ = 53382960.

The previous prime is 67470191. The next prime is 67470233. The reversal of 67470221 is 12207476.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67470221 - 2¹⁰ = 67469197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67470251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370625 + ... + 370806.

It is an arithmetic number, because the mean of its divisors is an integer number (10380048).

Almost surely, 2^67470221 is an apocalyptic number.

It is an amenable number.

67470221 is a deficient number, since it is larger than the sum of its proper divisors (15570163).

67470221 is a wasteful number, since it uses less digits than its factorization.

67470221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741451.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 67470221 is about 8214.0258704243. The cubic root of 67470221 is about 407.1027576506.

Adding to 67470221 its reverse (12207476), we get a palindrome (79677697).

The spelling of 67470221 in words is "sixty-seven million, four hundred seventy thousand, two hundred twenty-one".