710640 has 160 divisors (see below), whose sum is σ = 2856960. Its totient is φ = 158976.

The previous prime is 710627. The next prime is 710641. The reversal of 710640 is 46017.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 3.

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 710640.

It is not an unprimeable number, because it can be changed into a prime (710641) by changing a digit.

710640 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 31 ways as a sum of consecutive naturals, for example, 15097 + ... + 15143.

It is an arithmetic number, because the mean of its divisors is an integer number (17856).

2⁷¹⁰⁶⁴⁰ is an apocalyptic number.

710640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 710640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428480).

710640 is an abundant number, since it is smaller than the sum of its proper divisors (2146320).

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

710640 is a wasteful number, since it uses less digits than its factorization.

710640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 710640 is about 842.9946619048. The cubic root of 710640 is about 89.2380112418.

Adding to 710640 its reverse (46017), we get a palindrome (756657).

The spelling of 710640 in words is "seven hundred ten thousand, six hundred forty".