669058 has 8 divisors (see below), whose sum is σ = 1080828. Its totient is φ = 308784.

The previous prime is 669049. The next prime is 669077. The reversal of 669058 is 850966.

It can be written as a sum of positive squares in 2 ways, for example, as 537289 + 131769 = 733^2 + 363^2 .

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

It is an unprimeable number.

669058 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12841 + ... + 12892.

2⁶⁶⁹⁰⁵⁸ is an apocalyptic number.

669058 is a deficient number, since it is larger than the sum of its proper divisors (411770).

669058 is a wasteful number, since it uses less digits than its factorization.

669058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25748.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 669058 is about 817.9596567069. The cubic root of 669058 is about 87.4623729374.

The spelling of 669058 in words is "six hundred sixty-nine thousand, fifty-eight".