67424289 has 8 divisors (see below), whose sum is σ = 90067392. Its totient is φ = 44865360.

The previous prime is 67424257. The next prime is 67424297. The reversal of 67424289 is 98242476.

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

It is not a de Polignac number, because 67424289 - 2⁵ = 67424257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67424289.

It is not an unprimeable number, because it can be changed into a prime (67424219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19149 + ... + 22394.

It is an arithmetic number, because the mean of its divisors is an integer number (11258424).

Almost surely, 2^67424289 is an apocalyptic number.

It is an amenable number.

67424289 is a deficient number, since it is larger than the sum of its proper divisors (22643103).

67424289 is a wasteful number, since it uses less digits than its factorization.

67424289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42087.

The product of its digits is 193536, while the sum is 42.

The square root of 67424289 is about 8211.2294450953. The cubic root of 67424289 is about 407.0103549656.

The spelling of 67424289 in words is "sixty-seven million, four hundred twenty-four thousand, two hundred eighty-nine".