67047427 has 4 divisors (see below), whose sum is σ = 68474016. Its totient is φ = 65620840.

The previous prime is 67047413. The next prime is 67047457. The reversal of 67047427 is 72474076.

It is a happy number.

67047427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67047427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67047457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 713224 + ... + 713317.

It is an arithmetic number, because the mean of its divisors is an integer number (17118504).

Almost surely, 2^67047427 is an apocalyptic number.

67047427 is a deficient number, since it is larger than the sum of its proper divisors (1426589).

67047427 is a wasteful number, since it uses less digits than its factorization.

67047427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426588.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 67047427 is about 8188.2493244893. The cubic root of 67047427 is about 406.2506217900.

The spelling of 67047427 in words is "sixty-seven million, forty-seven thousand, four hundred twenty-seven".