689174061279 has 12 divisors (see below), whose sum is σ = 1010029203288. Its totient is φ = 417681249040.

The previous prime is 689174061263. The next prime is 689174061341. The reversal of 689174061279 is 972160471986.

It is not a de Polignac number, because 689174061279 - 2⁴ = 689174061263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689174081279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 949275204 + ... + 949275929.

It is an arithmetic number, because the mean of its divisors is an integer number (84169100274).

Almost surely, 2^689174061279 is an apocalyptic number.

689174061279 is a deficient number, since it is larger than the sum of its proper divisors (320855142009).

689174061279 is a wasteful number, since it uses less digits than its factorization.

689174061279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898551158 (or 1898551147 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 689174061279 in words is "six hundred eighty-nine billion, one hundred seventy-four million, sixty-one thousand, two hundred seventy-nine".