666727337 has 2 divisors, whose sum is σ = 666727338. Its totient is φ = 666727336.

The previous prime is 666727319. The next prime is 666727349. The reversal of 666727337 is 733727666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 656333161 + 10394176 = 25619^2 + 3224^2 .

It is a cyclic number.

It is not a de Polignac number, because 666727337 - 2⁶ = 666727273 is a prime.

It is a super-2 number, since 2×666727337² = 889050683806223138, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 666727291 and 666727300.

It is not a weakly prime, because it can be changed into another prime (666727307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333363668 + 333363669.

It is an arithmetic number, because the mean of its divisors is an integer number (333363669).

Almost surely, 2^666727337 is an apocalyptic number.

It is an amenable number.

666727337 is a deficient number, since it is larger than the sum of its proper divisors (1).

666727337 is an equidigital number, since it uses as much as digits as its factorization.

666727337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 47.

The square root of 666727337 is about 25821.0638239403. The cubic root of 666727337 is about 873.6069641414.

The spelling of 666727337 in words is "six hundred sixty-six million, seven hundred twenty-seven thousand, three hundred thirty-seven".