689769 has 16 divisors (see below), whose sum is σ = 1041600. Its totient is φ = 451008.

The previous prime is 689761. The next prime is 689771. The reversal of 689769 is 967986.

It is not a de Polignac number, because 689769 - 2³ = 689761 is a prime.

It is a super-2 number, since 2×689769² = 951562546722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (689761) 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, 1377 + ... + 1809.

It is an arithmetic number, because the mean of its divisors is an integer number (65100).

2⁶⁸⁹⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

689769 is a deficient number, since it is larger than the sum of its proper divisors (351831).

689769 is a wasteful number, since it uses less digits than its factorization.

689769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 495 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 689769 is about 830.5233289920. The cubic root of 689769 is about 88.3556970392.

The spelling of 689769 in words is "six hundred eighty-nine thousand, seven hundred sixty-nine".