662149769 has 2 divisors, whose sum is σ = 662149770. Its totient is φ = 662149768.

The previous prime is 662149759. The next prime is 662149777. The reversal of 662149769 is 967941266.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 655974544 + 6175225 = 25612^2 + 2485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662149769 is a prime.

It is a super-2 number, since 2×662149769² = 876884633173506722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (662149759) 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, 331074884 + 331074885.

It is an arithmetic number, because the mean of its divisors is an integer number (331074885).

Almost surely, 2^662149769 is an apocalyptic number.

It is an amenable number.

662149769 is a deficient number, since it is larger than the sum of its proper divisors (1).

662149769 is an equidigital number, since it uses as much as digits as its factorization.

662149769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 50.

The square root of 662149769 is about 25732.2709646856. The cubic root of 662149769 is about 871.6030553301.

The spelling of 662149769 in words is "six hundred sixty-two million, one hundred forty-nine thousand, seven hundred sixty-nine".