67117129 has 4 divisors (see below), whose sum is σ = 67354576. Its totient is φ = 66879684.

The previous prime is 67117121. The next prime is 67117147. The reversal of 67117129 is 92171176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67117129 - 2³ = 67117121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67117094 and 67117103.

It is not an unprimeable number, because it can be changed into a prime (67117121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118299 + ... + 118864.

It is an arithmetic number, because the mean of its divisors is an integer number (16838644).

Almost surely, 2^67117129 is an apocalyptic number.

It is an amenable number.

67117129 is a deficient number, since it is larger than the sum of its proper divisors (237447).

67117129 is a wasteful number, since it uses less digits than its factorization.

67117129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237446.

The product of its digits is 5292, while the sum is 34.

The square root of 67117129 is about 8192.5044400354. The cubic root of 67117129 is about 406.3913513960.

The spelling of 67117129 in words is "sixty-seven million, one hundred seventeen thousand, one hundred twenty-nine".