720964 has 6 divisors (see below), whose sum is σ = 1261694. Its totient is φ = 360480.

The previous prime is 720961. The next prime is 720971. The reversal of 720964 is 469027.

It can be written as a sum of positive squares in only one way, i.e., 409600 + 311364 = 640^2 + 558^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90117 + ... + 90124.

2⁷²⁰⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

720964 is a deficient number, since it is larger than the sum of its proper divisors (540730).

720964 is a wasteful number, since it uses less digits than its factorization.

720964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180245 (or 180243 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 720964 is about 849.0959898622. The cubic root of 720964 is about 89.6680777791.

The spelling of 720964 in words is "seven hundred twenty thousand, nine hundred sixty-four".