669662 has 16 divisors (see below), whose sum is σ = 1185792. Its totient is φ = 277560.

The previous prime is 669661. The next prime is 669667. The reversal of 669662 is 266966.

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 669662.

It is not an unprimeable number, because it can be changed into a prime (669661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338 + ... + 1205.

It is an arithmetic number, because the mean of its divisors is an integer number (74112).

2⁶⁶⁹⁶⁶² is an apocalyptic number.

669662 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

669662 is a deficient number, since it is larger than the sum of its proper divisors (516130).

669662 is a wasteful number, since it uses less digits than its factorization.

669662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583.

The product of its digits is 23328, while the sum is 35.

The square root of 669662 is about 818.3287847803. The cubic root of 669662 is about 87.4886842510.

It can be divided in two parts, 669 and 662, that added together give a palindrome (1331).

The spelling of 669662 in words is "six hundred sixty-nine thousand, six hundred sixty-two".