669073 has 8 divisors (see below), whose sum is σ = 700416. Its totient is φ = 638400.

The previous prime is 669049. The next prime is 669077. The reversal of 669073 is 370966.

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 669073 - 2¹⁷ = 538001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

669073 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (669077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3408 + ... + 3598.

It is an arithmetic number, because the mean of its divisors is an integer number (87552).

2⁶⁶⁹⁰⁷³ is an apocalyptic number.

It is an amenable number.

669073 is a deficient number, since it is larger than the sum of its proper divisors (31343).

669073 is a wasteful number, since it uses less digits than its factorization.

669073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 669073 is about 817.9688258118. The cubic root of 669073 is about 87.4630265558.

The spelling of 669073 in words is "six hundred sixty-nine thousand, seventy-three".