689473 has 4 divisors (see below), whose sum is σ = 691888. Its totient is φ = 687060.

The previous prime is 689467. The next prime is 689509. The reversal of 689473 is 374986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 689473 - 2⁵ = 689441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (689873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 711 + ... + 1372.

It is an arithmetic number, because the mean of its divisors is an integer number (172972).

2⁶⁸⁹⁴⁷³ is an apocalyptic number.

It is an amenable number.

689473 is a deficient number, since it is larger than the sum of its proper divisors (2415).

689473 is a wasteful number, since it uses less digits than its factorization.

689473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414.

The product of its digits is 36288, while the sum is 37.

The square root of 689473 is about 830.3451089758. The cubic root of 689473 is about 88.3430565619.

The spelling of 689473 in words is "six hundred eighty-nine thousand, four hundred seventy-three".