720622 has 8 divisors (see below), whose sum is σ = 1235376. Its totient is φ = 308832.

The previous prime is 720619. The next prime is 720653. The reversal of 720622 is 226027.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 720622.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25723 + ... + 25750.

It is an arithmetic number, because the mean of its divisors is an integer number (154422).

2⁷²⁰⁶²² is an apocalyptic number.

720622 is a deficient number, since it is larger than the sum of its proper divisors (514754).

720622 is a wasteful number, since it uses less digits than its factorization.

720622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51482.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 720622 is about 848.8945753155. The cubic root of 720622 is about 89.6538970743.

Adding to 720622 its reverse (226027), we get a palindrome (946649).

The spelling of 720622 in words is "seven hundred twenty thousand, six hundred twenty-two".