1689350565 has 32 divisors (see below), whose sum is σ = 3116457216. Its totient is φ = 765434880.

The previous prime is 1689350513. The next prime is 1689350569. The reversal of 1689350565 is 5650539861.

It is a happy number.

It is not a de Polignac number, because 1689350565 - 2¹¹ = 1689348517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689350569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59326 + ... + 83055.

It is an arithmetic number, because the mean of its divisors is an integer number (97389288).

Almost surely, 2^1689350565 is an apocalyptic number.

1689350565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1689350565 is a deficient number, since it is larger than the sum of its proper divisors (1427106651).

1689350565 is a wasteful number, since it uses less digits than its factorization.

1689350565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142509.

The product of its (nonzero) digits is 972000, while the sum is 48.

The square root of 1689350565 is about 41101.7100009233. The cubic root of 1689350565 is about 1190.9858283338.

The spelling of 1689350565 in words is "one billion, six hundred eighty-nine million, three hundred fifty thousand, five hundred sixty-five".