669499603 has 2 divisors, whose sum is σ = 669499604. Its totient is φ = 669499602.

The previous prime is 669499573. The next prime is 669499639. The reversal of 669499603 is 306994966.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 669499603 - 2¹³ = 669491411 is a prime.

It is not a weakly prime, because it can be changed into another prime (669499693) 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, 334749801 + 334749802.

It is an arithmetic number, because the mean of its divisors is an integer number (334749802).

Almost surely, 2^669499603 is an apocalyptic number.

669499603 is a deficient number, since it is larger than the sum of its proper divisors (1).

669499603 is an equidigital number, since it uses as much as digits as its factorization.

669499603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The square root of 669499603 is about 25874.6903942830. The cubic root of 669499603 is about 874.8161150456.

The spelling of 669499603 in words is "six hundred sixty-nine million, four hundred ninety-nine thousand, six hundred three".