669527 has 2 divisors, whose sum is σ = 669528. Its totient is φ = 669526.

The previous prime is 669481. The next prime is 669551. The reversal of 669527 is 725966.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669527 - 2⁶ = 669463 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669527.

It is not a weakly prime, because it can be changed into another prime (669577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334763 + 334764.

It is an arithmetic number, because the mean of its divisors is an integer number (334764).

2⁶⁶⁹⁵²⁷ is an apocalyptic number.

669527 is a deficient number, since it is larger than the sum of its proper divisors (1).

669527 is an equidigital number, since it uses as much as digits as its factorization.

669527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 35.

The square root of 669527 is about 818.2462954392. The cubic root of 669527 is about 87.4828047843.

The spelling of 669527 in words is "six hundred sixty-nine thousand, five hundred twenty-seven".