709872 has 40 divisors (see below), whose sum is σ = 1916544. Its totient is φ = 225984.

The previous prime is 709871. The next prime is 709879. The reversal of 709872 is 278907.

709872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709871) 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, 783 + ... + 1425.

2⁷⁰⁹⁸⁷² 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 709872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (958272).

709872 is an abundant number, since it is smaller than the sum of its proper divisors (1206672).

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

709872 is a wasteful number, since it uses less digits than its factorization.

709872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 709872 is about 842.5390198679. The cubic root of 709872 is about 89.2058526729.

The spelling of 709872 in words is "seven hundred nine thousand, eight hundred seventy-two".