669710 has 16 divisors (see below), whose sum is σ = 1215216. Its totient is φ = 265728.

The previous prime is 669707. The next prime is 669733. The reversal of 669710 is 17966.

It is a happy number.

It is a super-2 number, since 2×669710² = 897022968200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1757 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (75951).

2⁶⁶⁹⁷¹⁰ is an apocalyptic number.

669710 is a deficient number, since it is larger than the sum of its proper divisors (545506).

669710 is a wasteful number, since it uses less digits than its factorization.

669710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 669710 is about 818.3581123200. The cubic root of 669710 is about 87.4907745376.

The spelling of 669710 in words is "six hundred sixty-nine thousand, seven hundred ten".