654947089 has 2 divisors, whose sum is σ = 654947090. Its totient is φ = 654947088.

The previous prime is 654947077. The next prime is 654947131. The reversal of 654947089 is 980749456.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584672400 + 70274689 = 24180^2 + 8383^2 .

It is a cyclic number.

It is not a de Polignac number, because 654947089 - 2¹¹ = 654945041 is a prime.

It is not a weakly prime, because it can be changed into another prime (654947039) by changing a digit.

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 as a sum of consecutive naturals, namely, 327473544 + 327473545.

It is an arithmetic number, because the mean of its divisors is an integer number (327473545).

Almost surely, 2^654947089 is an apocalyptic number.

It is an amenable number.

654947089 is a deficient number, since it is larger than the sum of its proper divisors (1).

654947089 is an equidigital number, since it uses as much as digits as its factorization.

654947089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The square root of 654947089 is about 25591.9340613405. The cubic root of 654947089 is about 868.4311750114.

The spelling of 654947089 in words is "six hundred fifty-four million, nine hundred forty-seven thousand, eighty-nine".