654189 has 16 divisors (see below), whose sum is σ = 960000. Its totient is φ = 394416.

The previous prime is 654187. The next prime is 654191. The reversal of 654189 is 981456.

It is an interprime number because it is at equal distance from previous prime (654187) and next prime (654191).

It is not a de Polignac number, because 654189 - 2¹ = 654187 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062 + ... + 1560.

It is an arithmetic number, because the mean of its divisors is an integer number (60000).

2⁶⁵⁴¹⁸⁹ is an apocalyptic number.

654189 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

654189 is a deficient number, since it is larger than the sum of its proper divisors (305811).

654189 is a wasteful number, since it uses less digits than its factorization.

654189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544.

The product of its digits is 8640, while the sum is 33.

The square root of 654189 is about 808.8195101504. The cubic root of 654189 is about 86.8095981373.

The spelling of 654189 in words is "six hundred fifty-four thousand, one hundred eighty-nine".