669098539 has 2 divisors, whose sum is σ = 669098540. Its totient is φ = 669098538.

The previous prime is 669098503. The next prime is 669098567. The reversal of 669098539 is 935890966.

669098539 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 669098539 - 2¹⁹ = 668574251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 669098539.

It is not a weakly prime, because it can be changed into another prime (669098839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 334549269 + 334549270.

It is an arithmetic number, because the mean of its divisors is an integer number (334549270).

Almost surely, 2^669098539 is an apocalyptic number.

669098539 is a deficient number, since it is larger than the sum of its proper divisors (1).

669098539 is an equidigital number, since it uses as much as digits as its factorization.

669098539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The square root of 669098539 is about 25866.9391115377. The cubic root of 669098539 is about 874.6413938396.

The spelling of 669098539 in words is "six hundred sixty-nine million, ninety-eight thousand, five hundred thirty-nine".