669702 has 32 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 198720.

The previous prime is 669701. The next prime is 669707. The reversal of 669702 is 207966.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 669702.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669702.

It is not an unprimeable number, because it can be changed into a prime (669701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4749 + ... + 4887.

It is an arithmetic number, because the mean of its divisors is an integer number (46620).

2⁶⁶⁹⁷⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 669702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (745920).

669702 is an abundant number, since it is smaller than the sum of its proper divisors (822138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669702 is a wasteful number, since it uses less digits than its factorization.

669702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 669702 is about 818.3532244697. The cubic root of 669702 is about 87.4904261634.

The spelling of 669702 in words is "six hundred sixty-nine thousand, seven hundred two".