689905907 has 8 divisors (see below), whose sum is σ = 720226080. Its totient is φ = 659612800.

The previous prime is 689905873. The next prime is 689905919. The reversal of 689905907 is 709509986.

689905907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 689905907 - 2¹⁰ = 689904883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689905927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59069 + ... + 69777.

It is an arithmetic number, because the mean of its divisors is an integer number (90028260).

Almost surely, 2^689905907 is an apocalyptic number.

689905907 is a deficient number, since it is larger than the sum of its proper divisors (30320173).

689905907 is a wasteful number, since it uses less digits than its factorization.

689905907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13533.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 689905907 is about 26266.0599824184. The cubic root of 689905907 is about 883.6154233585.

The spelling of 689905907 in words is "six hundred eighty-nine million, nine hundred five thousand, nine hundred seven".