689848635685 has 32 divisors (see below), whose sum is σ = 914873283072. Its totient is φ = 495181486080.

The previous prime is 689848635673. The next prime is 689848635691. The reversal of 689848635685 is 586536848986.

It is not a de Polignac number, because 689848635685 - 2³³ = 681258701093 is a prime.

It is a super-2 number, since 2×689848635685² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1781779 + ... + 2134111.

It is an arithmetic number, because the mean of its divisors is an integer number (28589790096).

Almost surely, 2^689848635685 is an apocalyptic number.

It is an amenable number.

689848635685 is a deficient number, since it is larger than the sum of its proper divisors (225024647387).

689848635685 is a wasteful number, since it uses less digits than its factorization.

689848635685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352813.

The product of its digits is 2388787200, while the sum is 76.

The spelling of 689848635685 in words is "six hundred eighty-nine billion, eight hundred forty-eight million, six hundred thirty-five thousand, six hundred eighty-five".