67688436 has 24 divisors (see below), whose sum is σ = 163386720. Its totient is φ = 21784672.

The previous prime is 67688419. The next prime is 67688437. The reversal of 67688436 is 63488676.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67688437) 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 7 ways as a sum of consecutive naturals, for example, 96906 + ... + 97601.

It is an arithmetic number, because the mean of its divisors is an integer number (6807780).

Almost surely, 2^67688436 is an apocalyptic number.

It is an amenable number.

67688436 is an abundant number, since it is smaller than the sum of its proper divisors (95698284).

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

67688436 is a wasteful number, since it uses less digits than its factorization.

67688436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194543 (or 194541 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 67688436 is about 8227.2982199505. The cubic root of 67688436 is about 407.5411749078.

The spelling of 67688436 in words is "sixty-seven million, six hundred eighty-eight thousand, four hundred thirty-six".