171280679 has 4 divisors (see below), whose sum is σ = 171671280. Its totient is φ = 170890080.

The previous prime is 171280667. The next prime is 171280721. The reversal of 171280679 is 976082171.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 171280679 - 2²⁰ = 170232103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171280579) 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 3 ways as a sum of consecutive naturals, for example, 194642 + ... + 195519.

It is an arithmetic number, because the mean of its divisors is an integer number (42917820).

Almost surely, 2^171280679 is an apocalyptic number.

171280679 is a deficient number, since it is larger than the sum of its proper divisors (390601).

171280679 is an equidigital number, since it uses as much as digits as its factorization.

171280679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390600.

The product of its (nonzero) digits is 42336, while the sum is 41.

The square root of 171280679 is about 13087.4244601449. The cubic root of 171280679 is about 555.3534301609.

The spelling of 171280679 in words is "one hundred seventy-one million, two hundred eighty thousand, six hundred seventy-nine".