689430758171 has 4 divisors (see below), whose sum is σ = 691068361344. Its totient is φ = 687793155000.

The previous prime is 689430758161. The next prime is 689430758231. The reversal of 689430758171 is 171857034986.

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 689430758171 - 2²⁶ = 689363649307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 689430758171.

It is not an unprimeable number, because it can be changed into a prime (689430758161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818800955 + ... + 818801796.

It is an arithmetic number, because the mean of its divisors is an integer number (172767090336).

Almost surely, 2^689430758171 is an apocalyptic number.

689430758171 is a deficient number, since it is larger than the sum of its proper divisors (1637603173).

689430758171 is a wasteful number, since it uses less digits than its factorization.

689430758171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637603172.

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 689430758171 in words is "six hundred eighty-nine billion, four hundred thirty million, seven hundred fifty-eight thousand, one hundred seventy-one".