689471 has 8 divisors (see below), whose sum is σ = 743424. Its totient is φ = 637560.

The previous prime is 689467. The next prime is 689509. The reversal of 689471 is 174986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 689471 - 2² = 689467 is a prime.

It is a super-3 number, since 3×689471³ = 983262025268502333, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689411) 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 7 ways as a sum of consecutive naturals, for example, 230 + ... + 1196.

It is an arithmetic number, because the mean of its divisors is an integer number (92928).

2⁶⁸⁹⁴⁷¹ is an apocalyptic number.

689471 is a deficient number, since it is larger than the sum of its proper divisors (53953).

689471 is a wasteful number, since it uses less digits than its factorization.

689471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its digits is 12096, while the sum is 35.

The square root of 689471 is about 830.3439046564. The cubic root of 689471 is about 88.3429711410.

The spelling of 689471 in words is "six hundred eighty-nine thousand, four hundred seventy-one".