669297 has 4 divisors (see below), whose sum is σ = 892400. Its totient is φ = 446196.

The previous prime is 669289. The next prime is 669301. The reversal of 669297 is 792966.

669297 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 669297 - 2³ = 669289 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669247) 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, 111547 + ... + 111552.

It is an arithmetic number, because the mean of its divisors is an integer number (223100).

2⁶⁶⁹²⁹⁷ is an apocalyptic number.

It is an amenable number.

669297 is a deficient number, since it is larger than the sum of its proper divisors (223103).

669297 is a wasteful number, since it uses less digits than its factorization.

669297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223102.

The product of its digits is 40824, while the sum is 39.

The square root of 669297 is about 818.1057388871. The cubic root of 669297 is about 87.4727860947.

The spelling of 669297 in words is "six hundred sixty-nine thousand, two hundred ninety-seven".