720672 has 24 divisors (see below), whose sum is σ = 1892016. Its totient is φ = 240192.

The previous prime is 720661. The next prime is 720677. The reversal of 720672 is 276027.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (720677) by changing a digit.

720672 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 in 3 ways as a sum of consecutive naturals, for example, 3658 + ... + 3849.

It is an arithmetic number, because the mean of its divisors is an integer number (78834).

2⁷²⁰⁶⁷² is an apocalyptic number.

It is an amenable number.

720672 is an abundant number, since it is smaller than the sum of its proper divisors (1171344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720672 is a wasteful number, since it uses less digits than its factorization.

720672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520 (or 7512 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 720672 is about 848.9240248691. The cubic root of 720672 is about 89.6559705567.

Adding to 720672 its reverse (276027), we get a palindrome (996699).

The spelling of 720672 in words is "seven hundred twenty thousand, six hundred seventy-two".