659983213 has 2 divisors, whose sum is σ = 659983214. Its totient is φ = 659983212.

The previous prime is 659983199. The next prime is 659983223. The reversal of 659983213 is 312389956.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 583560649 + 76422564 = 24157^2 + 8742^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-659983213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (659983223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329991606 + 329991607.

It is an arithmetic number, because the mean of its divisors is an integer number (329991607).

Almost surely, 2^659983213 is an apocalyptic number.

It is an amenable number.

659983213 is a deficient number, since it is larger than the sum of its proper divisors (1).

659983213 is an equidigital number, since it uses as much as digits as its factorization.

659983213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 659983213 is about 25690.1384387083. The cubic root of 659983213 is about 870.6513873635.

The spelling of 659983213 in words is "six hundred fifty-nine million, nine hundred eighty-three thousand, two hundred thirteen".