689439573 has 16 divisors (see below), whose sum is σ = 1081474560. Its totient is φ = 432589248.

The previous prime is 689439547. The next prime is 689439577. The reversal of 689439573 is 375934986.

689439573 is a `hidden beast` number, since 68 + 9 + 4 + 3 + 9 + 573 = 666.

It is not a de Polignac number, because 689439573 - 2¹⁰ = 689438549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689439577) 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, 750565 + ... + 751482.

It is an arithmetic number, because the mean of its divisors is an integer number (67592160).

Almost surely, 2^689439573 is an apocalyptic number.

It is an amenable number.

689439573 is a deficient number, since it is larger than the sum of its proper divisors (392034987).

689439573 is a wasteful number, since it uses less digits than its factorization.

689439573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502073 (or 1502067 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The square root of 689439573 is about 26257.1813605345. The cubic root of 689439573 is about 883.4162885742.

The spelling of 689439573 in words is "six hundred eighty-nine million, four hundred thirty-nine thousand, five hundred seventy-three".