654049589 has 4 divisors (see below), whose sum is σ = 670002060. Its totient is φ = 638097120.

The previous prime is 654049573. The next prime is 654049601. The reversal of 654049589 is 985940456.

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 276058225 + 377991364 = 16615^2 + 19442^2 .

It is a cyclic number.

It is not a de Polignac number, because 654049589 - 2⁴ = 654049573 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654049549) 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, 7976174 + ... + 7976255.

It is an arithmetic number, because the mean of its divisors is an integer number (167500515).

Almost surely, 2^654049589 is an apocalyptic number.

It is an amenable number.

654049589 is a deficient number, since it is larger than the sum of its proper divisors (15952471).

654049589 is a wasteful number, since it uses less digits than its factorization.

654049589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15952470.

The product of its (nonzero) digits is 1555200, while the sum is 50.

The square root of 654049589 is about 25574.3932283837. The cubic root of 654049589 is about 868.0343117706.

The spelling of 654049589 in words is "six hundred fifty-four million, forty-nine thousand, five hundred eighty-nine".