654445 has 16 divisors (see below), whose sum is σ = 873792. Its totient is φ = 466560.

The previous prime is 654439. The next prime is 654491. The reversal of 654445 is 544456.

It is not a de Polignac number, because 654445 - 2⁵ = 654413 is a prime.

It is a Duffinian number.

654445 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3934 + ... + 4096.

It is an arithmetic number, because the mean of its divisors is an integer number (54612).

2⁶⁵⁴⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

654445 is a deficient number, since it is larger than the sum of its proper divisors (219347).

654445 is a wasteful number, since it uses less digits than its factorization.

654445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252.

The product of its digits is 9600, while the sum is 28.

The square root of 654445 is about 808.9777500031. The cubic root of 654445 is about 86.8209202266.

The spelling of 654445 in words is "six hundred fifty-four thousand, four hundred forty-five".