689000000689 has 96 divisors (see below), whose sum is σ = 997623475200. Its totient is φ = 460633754880.

The previous prime is 689000000657. The next prime is 689000000699. The reversal of 689000000689 is 986000000986.

It is a happy number.

It is not a de Polignac number, because 689000000689 - 2⁵ = 689000000657 is a prime.

689000000689 is a strobogrammatic number because it is the same when read upside-down.

It is not an unprimeable number, because it can be changed into a prime (689000000699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13077802 + ... + 13130380.

It is an arithmetic number, because the mean of its divisors is an integer number (10391911200).

Almost surely, 2^689000000689 is an apocalyptic number.

It is an amenable number.

689000000689 is a deficient number, since it is larger than the sum of its proper divisors (308623474511).

689000000689 is a wasteful number, since it uses less digits than its factorization.

689000000689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52695 (or 52682 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

It can be divided in two parts, 689000000 and 689, that multiplied together give a square (474721000000 = 689000²).

The spelling of 689000000689 in words is "six hundred eighty-nine billion, six hundred eighty-nine", and thus it is an aban number.