654043 has 4 divisors (see below), whose sum is σ = 704368. Its totient is φ = 603720.

The previous prime is 654029. The next prime is 654047. The reversal of 654043 is 340456.

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

It is not a de Polignac number, because 654043 - 2⁵ = 654011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (654047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25143 + ... + 25168.

It is an arithmetic number, because the mean of its divisors is an integer number (176092).

2⁶⁵⁴⁰⁴³ is an apocalyptic number.

654043 is a deficient number, since it is larger than the sum of its proper divisors (50325).

654043 is a wasteful number, since it uses less digits than its factorization.

654043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50324.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 654043 is about 808.7292501202. The cubic root of 654043 is about 86.8031396855.

Adding to 654043 its reverse (340456), we get a palindrome (994499).

The spelling of 654043 in words is "six hundred fifty-four thousand, forty-three".