67543992 has 96 divisors (see below), whose sum is σ = 195577200. Its totient is φ = 20984832.

The previous prime is 67543979. The next prime is 67543999. The reversal of 67543992 is 29934576.

It is a happy number.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67543999) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 169938 + ... + 170334.

Almost surely, 2^67543992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67543992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97788600).

67543992 is an abundant number, since it is smaller than the sum of its proper divisors (128033208).

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

67543992 is a wasteful number, since it uses less digits than its factorization.

67543992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 558 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 67543992 is about 8218.5151943645. The cubic root of 67543992 is about 407.2510771022.

The spelling of 67543992 in words is "sixty-seven million, five hundred forty-three thousand, nine hundred ninety-two".