689582 has 4 divisors (see below), whose sum is σ = 1034376. Its totient is φ = 344790.

The previous prime is 689581. The next prime is 689587. The reversal of 689582 is 285986.

689582 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 285986 = 2 ⋅142993.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172394 + ... + 172397.

It is an arithmetic number, because the mean of its divisors is an integer number (258594).

2⁶⁸⁹⁵⁸² is an apocalyptic number.

689582 is a deficient number, since it is larger than the sum of its proper divisors (344794).

689582 is a wasteful number, since it uses less digits than its factorization.

689582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344793.

The product of its digits is 34560, while the sum is 38.

The square root of 689582 is about 830.4107417417. The cubic root of 689582 is about 88.3477117530.

The spelling of 689582 in words is "six hundred eighty-nine thousand, five hundred eighty-two".