720662 has 8 divisors (see below), whose sum is σ = 1087176. Its totient is φ = 358272.

The previous prime is 720661. The next prime is 720677. The reversal of 720662 is 266027.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 1319.

It is an arithmetic number, because the mean of its divisors is an integer number (135897).

2⁷²⁰⁶⁶² is an apocalyptic number.

720662 is a deficient number, since it is larger than the sum of its proper divisors (366514).

720662 is a wasteful number, since it uses less digits than its factorization.

720662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 720662 is about 848.9181350401. The cubic root of 720662 is about 89.6555558679.

Adding to 720662 its reverse (266027), we get a palindrome (986689).

The spelling of 720662 in words is "seven hundred twenty thousand, six hundred sixty-two".