606576778669 has 2 divisors, whose sum is σ = 606576778670. Its totient is φ = 606576778668.

The previous prime is 606576778649. The next prime is 606576778793. The reversal of 606576778669 is 966877675606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 510706041769 + 95870736900 = 714637^2 + 309630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-606576778669 is a prime.

It is a super-2 number, since 2×606576778669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606576778649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303288389334 + 303288389335.

It is an arithmetic number, because the mean of its divisors is an integer number (303288389335).

Almost surely, 2^606576778669 is an apocalyptic number.

It is an amenable number.

606576778669 is a deficient number, since it is larger than the sum of its proper divisors (1).

606576778669 is an equidigital number, since it uses as much as digits as its factorization.

606576778669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960180480, while the sum is 73.

The spelling of 606576778669 in words is "six hundred six billion, five hundred seventy-six million, seven hundred seventy-eight thousand, six hundred sixty-nine".