654746641 has 2 divisors, whose sum is σ = 654746642. Its totient is φ = 654746640.

The previous prime is 654746627. The next prime is 654746657. The reversal of 654746641 is 146647456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363703041 + 291043600 = 19071^2 + 17060^2 .

It is a cyclic number.

It is not a de Polignac number, because 654746641 - 2¹¹ = 654744593 is a prime.

It is not a weakly prime, because it can be changed into another prime (654743641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327373320 + 327373321.

It is an arithmetic number, because the mean of its divisors is an integer number (327373321).

Almost surely, 2^654746641 is an apocalyptic number.

It is an amenable number.

654746641 is a deficient number, since it is larger than the sum of its proper divisors (1).

654746641 is an equidigital number, since it uses as much as digits as its factorization.

654746641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 654746641 is about 25588.0175277414. The cubic root of 654746641 is about 868.3425708799.

The spelling of 654746641 in words is "six hundred fifty-four million, seven hundred forty-six thousand, six hundred forty-one".