689104391 has 8 divisors (see below), whose sum is σ = 708081360. Its totient is φ = 670146048.

The previous prime is 689104379. The next prime is 689104399. The reversal of 689104391 is 193401986.

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 689104391 - 2⁶ = 689104327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689104399) 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, 105575 + ... + 111911.

It is an arithmetic number, because the mean of its divisors is an integer number (88510170).

Almost surely, 2^689104391 is an apocalyptic number.

689104391 is a deficient number, since it is larger than the sum of its proper divisors (18976969).

689104391 is a wasteful number, since it uses less digits than its factorization.

689104391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9313.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 689104391 is about 26250.7979116826. The cubic root of 689104391 is about 883.2731030805.

The spelling of 689104391 in words is "six hundred eighty-nine million, one hundred four thousand, three hundred ninety-one".