708666 has 32 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 197616.

The previous prime is 708647. The next prime is 708667. The reversal of 708666 is 666807.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (708667) by changing a digit.

708666 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 15 ways as a sum of consecutive naturals, for example, 1795 + ... + 2153.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁷⁰⁸⁶⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 708666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829440).

708666 is an abundant number, since it is smaller than the sum of its proper divisors (950214).

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

708666 is a wasteful number, since it uses less digits than its factorization.

708666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 708666 is about 841.8230217807. The cubic root of 708666 is about 89.1553068282.

The spelling of 708666 in words is "seven hundred eight thousand, six hundred sixty-six".