67471220 has 24 divisors (see below), whose sum is σ = 144093600. Its totient is φ = 26530592.

The previous prime is 67471207. The next prime is 67471247. The reversal of 67471220 is 2217476.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27410 + ... + 29769.

It is an arithmetic number, because the mean of its divisors is an integer number (6003900).

Almost surely, 2^67471220 is an apocalyptic number.

It is an amenable number.

67471220 is an abundant number, since it is smaller than the sum of its proper divisors (76622380).

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

67471220 is a wasteful number, since it uses less digits than its factorization.

67471220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57247 (or 57245 counting only the distinct ones).

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

The square root of 67471220 is about 8214.0866808185. The cubic root of 67471220 is about 407.1047669008.

Adding to 67471220 its reverse (2217476), we get a palindrome (69688696).

The spelling of 67471220 in words is "sixty-seven million, four hundred seventy-one thousand, two hundred twenty".