654310561 has 2 divisors, whose sum is σ = 654310562. Its totient is φ = 654310560.

The previous prime is 654310549. The next prime is 654310577. The reversal of 654310561 is 165013456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 359329936 + 294980625 = 18956^2 + 17175^2 .

It is a cyclic number.

It is not a de Polignac number, because 654310561 - 2¹¹ = 654308513 is a prime.

It is a super-2 number, since 2×654310561² = 856244620472269442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (654310861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327155280 + 327155281.

It is an arithmetic number, because the mean of its divisors is an integer number (327155281).

Almost surely, 2^654310561 is an apocalyptic number.

It is an amenable number.

654310561 is a deficient number, since it is larger than the sum of its proper divisors (1).

654310561 is an equidigital number, since it uses as much as digits as its factorization.

654310561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 654310561 is about 25579.4949324649. The cubic root of 654310561 is about 868.1497477310.

The spelling of 654310561 in words is "six hundred fifty-four million, three hundred ten thousand, five hundred sixty-one".