720208 has 10 divisors (see below), whose sum is σ = 1395434. Its totient is φ = 360096.

The previous prime is 720197. The next prime is 720211. The reversal of 720208 is 802027.

720208 is nontrivially palindromic in base 7.

It can be written as a sum of positive squares in only one way, i.e., 419904 + 300304 = 648^2 + 548^2 .

It is a zygodrome in base 4.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 22491 + ... + 22522.

2⁷²⁰²⁰⁸ is an apocalyptic number.

It is an amenable number.

720208 is a deficient number, since it is larger than the sum of its proper divisors (675226).

720208 is a wasteful number, since it uses less digits than its factorization.

720208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45021 (or 45015 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 720208 is about 848.6506937486. The cubic root of 720208 is about 89.6367249537.

The spelling of 720208 in words is "seven hundred twenty thousand, two hundred eight".