669313 has 4 divisors (see below), whose sum is σ = 704560. Its totient is φ = 634068.

The previous prime is 669311. The next prime is 669329. The reversal of 669313 is 313966.

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 669313 - 2¹ = 669311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (669311) 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, 17595 + ... + 17632.

It is an arithmetic number, because the mean of its divisors is an integer number (176140).

2⁶⁶⁹³¹³ is an apocalyptic number.

It is an amenable number.

669313 is a deficient number, since it is larger than the sum of its proper divisors (35247).

669313 is a wasteful number, since it uses less digits than its factorization.

669313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35246.

The product of its digits is 2916, while the sum is 28.

The square root of 669313 is about 818.1155175157. The cubic root of 669313 is about 87.4734831213.

The spelling of 669313 in words is "six hundred sixty-nine thousand, three hundred thirteen".