660244229 has 2 divisors, whose sum is σ = 660244230. Its totient is φ = 660244228.

The previous prime is 660244223. The next prime is 660244241. The reversal of 660244229 is 922442066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336172225 + 324072004 = 18335^2 + 18002^2 .

It is a cyclic number.

It is not a de Polignac number, because 660244229 - 2⁴ = 660244213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660244223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330122114 + 330122115.

It is an arithmetic number, because the mean of its divisors is an integer number (330122115).

Almost surely, 2^660244229 is an apocalyptic number.

It is an amenable number.

660244229 is a deficient number, since it is larger than the sum of its proper divisors (1).

660244229 is an equidigital number, since it uses as much as digits as its factorization.

660244229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 660244229 is about 25695.2180181449. The cubic root of 660244229 is about 870.7661498735.

The spelling of 660244229 in words is "six hundred sixty million, two hundred forty-four thousand, two hundred twenty-nine".