669047 has 8 divisors (see below), whose sum is σ = 735360. Its totient is φ = 605880.

The previous prime is 669029. The next prime is 669049. The reversal of 669047 is 740966.

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 669047 - 2⁸ = 668791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669049) 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, 329 + ... + 1202.

It is an arithmetic number, because the mean of its divisors is an integer number (91920).

2⁶⁶⁹⁰⁴⁷ is an apocalyptic number.

669047 is a deficient number, since it is larger than the sum of its proper divisors (66313).

669047 is a wasteful number, since it uses less digits than its factorization.

669047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 669047 is about 817.9529326312. The cubic root of 669047 is about 87.4618936111.

The spelling of 669047 in words is "six hundred sixty-nine thousand, forty-seven".