689000001 has 16 divisors (see below), whose sum is σ = 933212160. Its totient is φ = 452097360.

The previous prime is 688999991. The next prime is 689000027. The reversal of 689000001 is 100000986.

It is not a de Polignac number, because 689000001 - 2¹⁵ = 688967233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (689005001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74056 + ... + 82838.

It is an arithmetic number, because the mean of its divisors is an integer number (58325760).

Almost surely, 2^689000001 is an apocalyptic number.

It is an amenable number.

689000001 is a deficient number, since it is larger than the sum of its proper divisors (244212159).

689000001 is a wasteful number, since it uses less digits than its factorization.

689000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9196.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 689000001 is about 26248.8095158619. The cubic root of 689000001 is about 883.2284995164.

Adding to 689000001 its reverse (100000986), we get a palindrome (789000987).

The spelling of 689000001 in words is "six hundred eighty-nine million, one", and thus it is an aban number.