654621103 has 2 divisors, whose sum is σ = 654621104. Its totient is φ = 654621102.

The previous prime is 654621059. The next prime is 654621133. The reversal of 654621103 is 301126456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654621103 - 2²⁵ = 621066671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654621133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327310551 + 327310552.

It is an arithmetic number, because the mean of its divisors is an integer number (327310552).

Almost surely, 2^654621103 is an apocalyptic number.

654621103 is a deficient number, since it is larger than the sum of its proper divisors (1).

654621103 is an equidigital number, since it uses as much as digits as its factorization.

654621103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 654621103 is about 25585.5643478896. The cubic root of 654621103 is about 868.2870700441.

Adding to 654621103 its reverse (301126456), we get a palindrome (955747559).

The spelling of 654621103 in words is "six hundred fifty-four million, six hundred twenty-one thousand, one hundred three".