654066445 has 4 divisors (see below), whose sum is σ = 784879740. Its totient is φ = 523253152.

The previous prime is 654066443. The next prime is 654066473. The reversal of 654066445 is 544660456.

654066445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 379899081 + 274167364 = 19491^2 + 16558^2 .

It is a cyclic number.

It is not a de Polignac number, because 654066445 - 2¹ = 654066443 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 654066398 and 654066407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654066443) 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, 65406640 + ... + 65406649.

It is an arithmetic number, because the mean of its divisors is an integer number (196219935).

Almost surely, 2^654066445 is an apocalyptic number.

It is an amenable number.

654066445 is a deficient number, since it is larger than the sum of its proper divisors (130813295).

654066445 is a wasteful number, since it uses less digits than its factorization.

654066445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130813294.

The product of its (nonzero) digits is 345600, while the sum is 40.

The square root of 654066445 is about 25574.7227746461. The cubic root of 654066445 is about 868.0417686265.

The spelling of 654066445 in words is "six hundred fifty-four million, sixty-six thousand, four hundred forty-five".