606491863 has 2 divisors, whose sum is σ = 606491864. Its totient is φ = 606491862.

The previous prime is 606491849. The next prime is 606491891. The reversal of 606491863 is 368194606.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 606491863 - 2⁹ = 606491351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606491833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303245931 + 303245932.

It is an arithmetic number, because the mean of its divisors is an integer number (303245932).

Almost surely, 2^606491863 is an apocalyptic number.

606491863 is a deficient number, since it is larger than the sum of its proper divisors (1).

606491863 is an equidigital number, since it uses as much as digits as its factorization.

606491863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 606491863 is about 24627.0555081195. The cubic root of 606491863 is about 846.4636761144.

The spelling of 606491863 in words is "six hundred six million, four hundred ninety-one thousand, eight hundred sixty-three".