689000689 has 16 divisors (see below), whose sum is σ = 763563024. Its totient is φ = 617760000.

The previous prime is 689000651. The next prime is 689000693. The reversal of 689000689 is 986000986.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 160782400 + 528218289 = 12680^2 + 22983^2 .

It is not a de Polignac number, because 689000689 - 2⁷ = 689000561 is a prime.

689000689 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689000639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64639 + ... + 74539.

It is an arithmetic number, because the mean of its divisors is an integer number (47722689).

Almost surely, 2^689000689 is an apocalyptic number.

It is an amenable number.

689000689 is a deficient number, since it is larger than the sum of its proper divisors (74562335).

689000689 is a wasteful number, since it uses less digits than its factorization.

689000689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10068.

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

The square root of 689000689 is about 26248.8226212148. The cubic root of 689000689 is about 883.2287934985.

The spelling of 689000689 in words is "six hundred eighty-nine million, six hundred eighty-nine", and thus it is an aban number.