709680 has 40 divisors (see below), whose sum is σ = 2200752. Its totient is φ = 189184.

The previous prime is 709679. The next prime is 709691. The reversal of 709680 is 86907.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1239 + ... + 1718.

2⁷⁰⁹⁶⁸⁰ is an apocalyptic number.

It is an amenable number.

709680 is an abundant number, since it is smaller than the sum of its proper divisors (1491072).

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

709680 is a wasteful number, since it uses less digits than its factorization.

709680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2973 (or 2967 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 709680 is about 842.4250708520. The cubic root of 709680 is about 89.1978094068.

The spelling of 709680 in words is "seven hundred nine thousand, six hundred eighty".