654216413 has 2 divisors, whose sum is σ = 654216414. Its totient is φ = 654216412.

The previous prime is 654216397. The next prime is 654216421. The reversal of 654216413 is 314612456.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605258404 + 48958009 = 24602^2 + 6997^2 .

It is a cyclic number.

It is not a de Polignac number, because 654216413 - 2⁴ = 654216397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 654216413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654216443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327108206 + 327108207.

It is an arithmetic number, because the mean of its divisors is an integer number (327108207).

Almost surely, 2^654216413 is an apocalyptic number.

It is an amenable number.

654216413 is a deficient number, since it is larger than the sum of its proper divisors (1).

654216413 is an equidigital number, since it uses as much as digits as its factorization.

654216413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 654216413 is about 25577.6545640917. The cubic root of 654216413 is about 868.1081067082.

Adding to 654216413 its reverse (314612456), we get a palindrome (968828869).

The spelling of 654216413 in words is "six hundred fifty-four million, two hundred sixteen thousand, four hundred thirteen".