689554 has 12 divisors (see below), whose sum is σ = 1099674. Its totient is φ = 324224.

The previous prime is 689551. The next prime is 689561. The reversal of 689554 is 455986.

It can be written as a sum of positive squares in 3 ways, for example, as 683929 + 5625 = 827^2 + 75^2 .

It is not an unprimeable number, because it can be changed into a prime (689551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19 + ... + 1174.

2⁶⁸⁹⁵⁵⁴ is an apocalyptic number.

689554 is a deficient number, since it is larger than the sum of its proper divisors (410120).

689554 is a wasteful number, since it uses less digits than its factorization.

689554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229 (or 1212 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 689554 is about 830.3938824437. The cubic root of 689554 is about 88.3465159709.

The spelling of 689554 in words is "six hundred eighty-nine thousand, five hundred fifty-four".