689519 has 4 divisors (see below), whose sum is σ = 692760. Its totient is φ = 686280.

The previous prime is 689509. The next prime is 689551. The reversal of 689519 is 915986.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 689519 - 2¹⁶ = 623983 is a prime.

It is a super-2 number, since 2×689519² = 950872902722, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (19440) is a multiple of the sum of its prime divisors (3240).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689509) 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 3 ways as a sum of consecutive naturals, for example, 1277 + ... + 1734.

It is an arithmetic number, because the mean of its divisors is an integer number (173190).

2⁶⁸⁹⁵¹⁹ is an apocalyptic number.

689519 is a deficient number, since it is larger than the sum of its proper divisors (3241).

689519 is a wasteful number, since it uses less digits than its factorization.

689519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240.

The product of its digits is 19440, while the sum is 38.

The square root of 689519 is about 830.3728078399. The cubic root of 689519 is about 88.3450211978.

The spelling of 689519 in words is "six hundred eighty-nine thousand, five hundred nineteen".