689340934823 has 16 divisors (see below), whose sum is σ = 704507512800. Its totient is φ = 674320204800.

The previous prime is 689340934811. The next prime is 689340934829. The reversal of 689340934823 is 328439043986.

It is a cyclic number.

It is not a de Polignac number, because 689340934823 - 2¹⁸ = 689340672679 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 (689340934829) 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, 56307983 + ... + 56320223.

It is an arithmetic number, because the mean of its divisors is an integer number (44031719550).

Almost surely, 2^689340934823 is an apocalyptic number.

689340934823 is a deficient number, since it is larger than the sum of its proper divisors (15166577977).

689340934823 is a wasteful number, since it uses less digits than its factorization.

689340934823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18098.

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 689340934823 in words is "six hundred eighty-nine billion, three hundred forty million, nine hundred thirty-four thousand, eight hundred twenty-three".