669028349 has 8 divisors (see below), whose sum is σ = 731451648. Its totient is φ = 606872160.

The previous prime is 669028337. The next prime is 669028369. The reversal of 669028349 is 943820966.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 669028349 - 2¹⁶ = 668962813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669028369) 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 in 7 ways as a sum of consecutive naturals, for example, 61517 + ... + 71570.

It is an arithmetic number, because the mean of its divisors is an integer number (91431456).

Almost surely, 2^669028349 is an apocalyptic number.

It is an amenable number.

669028349 is a deficient number, since it is larger than the sum of its proper divisors (62423299).

669028349 is a wasteful number, since it uses less digits than its factorization.

669028349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133555.

The product of its (nonzero) digits is 559872, while the sum is 47.

The square root of 669028349 is about 25865.5823247805. The cubic root of 669028349 is about 874.6108087949.

The spelling of 669028349 in words is "six hundred sixty-nine million, twenty-eight thousand, three hundred forty-nine".