67689429 has 16 divisors (see below), whose sum is σ = 91232064. Its totient is φ = 44640000.

The previous prime is 67689421. The next prime is 67689467. The reversal of 67689429 is 92498676.

It is a happy number.

It is not a de Polignac number, because 67689429 - 2³ = 67689421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67689421) 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, 181287 + ... + 181659.

It is an arithmetic number, because the mean of its divisors is an integer number (5702004).

Almost surely, 2^67689429 is an apocalyptic number.

It is an amenable number.

67689429 is a deficient number, since it is larger than the sum of its proper divisors (23542635).

67689429 is a wasteful number, since it uses less digits than its factorization.

67689429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868.

The product of its digits is 1306368, while the sum is 51.

The square root of 67689429 is about 8227.3585676084. The cubic root of 67689429 is about 407.5431677957.

The spelling of 67689429 in words is "sixty-seven million, six hundred eighty-nine thousand, four hundred twenty-nine".