708640 has 48 divisors (see below), whose sum is σ = 1729728. Its totient is φ = 274176.

The previous prime is 708601. The next prime is 708641. The reversal of 708640 is 46807.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (708641) 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, 6829 + ... + 6931.

It is an arithmetic number, because the mean of its divisors is an integer number (36036).

2⁷⁰⁸⁶⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 708640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864864).

708640 is an abundant number, since it is smaller than the sum of its proper divisors (1021088).

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

708640 is a wasteful number, since it uses less digits than its factorization.

708640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 153 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 708640 is about 841.8075789633. The cubic root of 708640 is about 89.1542164855.

The spelling of 708640 in words is "seven hundred eight thousand, six hundred forty".