67745238 has 64 divisors (see below), whose sum is σ = 158112000. Its totient is φ = 19282560.

The previous prime is 67745191. The next prime is 67745239. The reversal of 67745238 is 83254776.

It is a self number, because there is not a number n which added to its sum of digits gives 67745238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67745239) 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 31 ways as a sum of consecutive naturals, for example, 135513 + ... + 136011.

It is an arithmetic number, because the mean of its divisors is an integer number (2470500).

Almost surely, 2^67745238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67745238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79056000).

67745238 is an abundant number, since it is smaller than the sum of its proper divisors (90366762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67745238 is a wasteful number, since it uses less digits than its factorization.

67745238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 532 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 67745238 is about 8230.7495405947. The cubic root of 67745238 is about 407.6551416001.

The spelling of 67745238 in words is "sixty-seven million, seven hundred forty-five thousand, two hundred thirty-eight".