67442285 has 8 divisors (see below), whose sum is σ = 81035640. Its totient is φ = 53883904.

The previous prime is 67442239. The next prime is 67442293. The reversal of 67442285 is 58224476.

It can be written as a sum of positive squares in 4 ways, for example, as 34597924 + 32844361 = 5882^2 + 5731^2 .

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 67442285 - 2⁸ = 67442029 is a prime.

It is a Curzon number.

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, 4292 + ... + 12381.

It is an arithmetic number, because the mean of its divisors is an integer number (10129455).

Almost surely, 2^67442285 is an apocalyptic number.

It is an amenable number.

67442285 is a deficient number, since it is larger than the sum of its proper divisors (13593355).

67442285 is a wasteful number, since it uses less digits than its factorization.

67442285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17487.

The product of its digits is 107520, while the sum is 38.

The square root of 67442285 is about 8212.3251883982. The cubic root of 67442285 is about 407.0465630191.

The spelling of 67442285 in words is "sixty-seven million, four hundred forty-two thousand, two hundred eighty-five".