715720 has 32 divisors (see below), whose sum is σ = 1668600. Its totient is φ = 275968.

The previous prime is 715699. The next prime is 715727. The reversal of 715720 is 27517.

It can be written as a sum of positive squares in 4 ways, for example, as 376996 + 338724 = 614^2 + 582^2 .

It is a junction number, because it is equal to n+sod(n) for n = 715691 and 715700.

It is not an unprimeable number, because it can be changed into a prime (715727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852 + ... + 1468.

2⁷¹⁵⁷²⁰ 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 715720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (834300).

715720 is an abundant number, since it is smaller than the sum of its proper divisors (952880).

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

715720 is a wasteful number, since it uses less digits than its factorization.

715720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 715720 is about 846.0023640629. The cubic root of 715720 is about 89.4501454500.

The spelling of 715720 in words is "seven hundred fifteen thousand, seven hundred twenty".