654143 has 16 divisors (see below), whose sum is σ = 829440. Its totient is φ = 502656.

The previous prime is 654127. The next prime is 654149. The reversal of 654143 is 341456.

It is a happy number.

It is not a de Polignac number, because 654143 - 2⁴ = 654127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654149) 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, 2618 + ... + 2856.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁶⁵⁴¹⁴³ is an apocalyptic number.

654143 is a deficient number, since it is larger than the sum of its proper divisors (175297).

654143 is a wasteful number, since it uses less digits than its factorization.

654143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286.

The product of its digits is 1440, while the sum is 23.

The square root of 654143 is about 808.7910731456. The cubic root of 654143 is about 86.8075633863.

654143 divided by its sum of digits (23) gives a triangular number (28441 = T₂₃₈).

Adding to 654143 its reverse (341456), we get a palindrome (995599).

It can be divided in two parts, 654 and 143, that added together give a palindrome (797).

The spelling of 654143 in words is "six hundred fifty-four thousand, one hundred forty-three".