654543403 has 2 divisors, whose sum is σ = 654543404. Its totient is φ = 654543402.

The previous prime is 654543389. The next prime is 654543433. The reversal of 654543403 is 304345456.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 654543403 - 2⁵ = 654543371 is a prime.

It is not a weakly prime, because it can be changed into another prime (654543433) 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, 327271701 + 327271702.

It is an arithmetic number, because the mean of its divisors is an integer number (327271702).

Almost surely, 2^654543403 is an apocalyptic number.

654543403 is a deficient number, since it is larger than the sum of its proper divisors (1).

654543403 is an equidigital number, since it uses as much as digits as its factorization.

654543403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 34.

The square root of 654543403 is about 25584.0458684705. The cubic root of 654543403 is about 868.2527150182.

Adding to 654543403 its reverse (304345456), we get a palindrome (958888859).

The spelling of 654543403 in words is "six hundred fifty-four million, five hundred forty-three thousand, four hundred three".