669353 has 4 divisors (see below), whose sum is σ = 680388. Its totient is φ = 658320.

The previous prime is 669329. The next prime is 669359. The reversal of 669353 is 353966.

669353 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 353966 = 2 ⋅176983.

It can be written as a sum of positive squares in 2 ways, for example, as 162409 + 506944 = 403^2 + 712^2 .

It is a cyclic number.

It is not a de Polignac number, because 669353 - 2⁶ = 669289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5426 + ... + 5547.

It is an arithmetic number, because the mean of its divisors is an integer number (170097).

2⁶⁶⁹³⁵³ is an apocalyptic number.

It is an amenable number.

669353 is a deficient number, since it is larger than the sum of its proper divisors (11035).

669353 is a wasteful number, since it uses less digits than its factorization.

669353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11034.

The product of its digits is 14580, while the sum is 32.

The square root of 669353 is about 818.1399635759. The cubic root of 669353 is about 87.4752256392.

The spelling of 669353 in words is "six hundred sixty-nine thousand, three hundred fifty-three".