67689398 has 16 divisors (see below), whose sum is σ = 116225280. Its totient is φ = 28963176.

The previous prime is 67689389. The next prime is 67689409. The reversal of 67689398 is 89398676.

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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6023 + ... + 13101.

It is an arithmetic number, because the mean of its divisors is an integer number (7264080).

Almost surely, 2^67689398 is an apocalyptic number.

67689398 is a deficient number, since it is larger than the sum of its proper divisors (48535882).

67689398 is a wasteful number, since it uses less digits than its factorization.

67689398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its digits is 3919104, while the sum is 56.

The square root of 67689398 is about 8227.3566836500. The cubic root of 67689398 is about 407.5431055810.

The spelling of 67689398 in words is "sixty-seven million, six hundred eighty-nine thousand, three hundred ninety-eight".