668527 has 2 divisors, whose sum is σ = 668528.
Its totient is φ = 668526.
The previous prime is 668513. The next prime is 668531. The reversal of 668527 is 725866.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-668527 is a prime.
668527 is a lucky number.
It is a plaindrome in base 14.
It is a junction number, because it is equal to n+sod(n) for n = 668492 and 668501.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (668567) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334263 + 334264.
It is an arithmetic number, because the mean of its divisors is an integer number (334264).
2668527 is an apocalyptic number.
668527 is a deficient number, since it is larger than the sum of its proper divisors (1).
668527 is an equidigital number, since it uses as much as digits as its factorization.
668527 is an evil number, because the sum of its binary digits is even.
The product of its digits is 20160, while the sum is 34.
The square root of 668527 is about 817.6350041430.
The cubic root of 668527 is about 87.4392285504.
The spelling of 668527 in words is "six hundred sixty-eight thousand, five hundred twenty-seven".