689000691 has 8 divisors (see below), whose sum is σ = 918867904. Its totient is φ = 459233640.

The previous prime is 689000651. The next prime is 689000693. The reversal of 689000691 is 196000986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 689000691 - 2⁷ = 689000563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689000693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7165 + ... + 37806.

It is an arithmetic number, because the mean of its divisors is an integer number (114858488).

Almost surely, 2^689000691 is an apocalyptic number.

689000691 is a deficient number, since it is larger than the sum of its proper divisors (229867213).

689000691 is a wasteful number, since it uses less digits than its factorization.

689000691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50081.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 689000691 is about 26248.8226593118. The cubic root of 689000691 is about 883.2287943531.

The spelling of 689000691 in words is "six hundred eighty-nine million, six hundred ninety-one", and thus it is an aban number.