67870385 has 16 divisors (see below), whose sum is σ = 89009280. Its totient is φ = 49271040.

The previous prime is 67870381. The next prime is 67870403. The reversal of 67870385 is 58307876.

It is not a de Polignac number, because 67870385 - 2² = 67870381 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67870381) 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 15 ways as a sum of consecutive naturals, for example, 54884 + ... + 56106.

It is an arithmetic number, because the mean of its divisors is an integer number (5563080).

Almost surely, 2^67870385 is an apocalyptic number.

It is an amenable number.

67870385 is a deficient number, since it is larger than the sum of its proper divisors (21138895).

67870385 is a wasteful number, since it uses less digits than its factorization.

67870385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 67870385 is about 8238.3484388559. The cubic root of 67870385 is about 407.9060100840.

The spelling of 67870385 in words is "sixty-seven million, eight hundred seventy thousand, three hundred eighty-five".