67404271 has 4 divisors (see below), whose sum is σ = 73531944. Its totient is φ = 61276600.

The previous prime is 67404247. The next prime is 67404277. The reversal of 67404271 is 17240476.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 67404271 - 2¹⁵ = 67371503 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67404277) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3063820 + ... + 3063841.

It is an arithmetic number, because the mean of its divisors is an integer number (18382986).

Almost surely, 2^67404271 is an apocalyptic number.

67404271 is a deficient number, since it is larger than the sum of its proper divisors (6127673).

67404271 is a wasteful number, since it uses less digits than its factorization.

67404271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6127672.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 67404271 is about 8210.0104141225. The cubic root of 67404271 is about 406.9700710666.

It can be divided in two parts, 6740 and 4271, that added together give a palindrome (11011).

The spelling of 67404271 in words is "sixty-seven million, four hundred four thousand, two hundred seventy-one".