720970 has 16 divisors (see below), whose sum is σ = 1374408. Its totient is φ = 271360.

The previous prime is 720961. The next prime is 720971. The reversal of 720970 is 79027.

It can be written as a sum of positive squares in 4 ways, for example, as 720801 + 169 = 849^2 + 13^2 .

It is not an unprimeable number, because it can be changed into a prime (720971) by changing a digit.

720970 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 7 ways as a sum of consecutive naturals, for example, 1951 + ... + 2290.

2⁷²⁰⁹⁷⁰ is an apocalyptic number.

720970 is a deficient number, since it is larger than the sum of its proper divisors (653438).

720970 is a wasteful number, since it uses less digits than its factorization.

720970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4265.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 720970 is about 849.0995230242. The cubic root of 720970 is about 89.6683265233.

Adding to 720970 its reverse (79027), we get a palindrome (799997).

The spelling of 720970 in words is "seven hundred twenty thousand, nine hundred seventy".