720108 has 36 divisors (see below), whose sum is σ = 1849848. Its totient is φ = 236160.

The previous prime is 720101. The next prime is 720127. The reversal of 720108 is 801027.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

720108 is a modest number, since divided by 108 gives 72 as remainder.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720108.

It is not an unprimeable number, because it can be changed into a prime (720101) by changing a digit.

720108 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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2868 + ... + 3108.

2⁷²⁰¹⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 720108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (924924).

720108 is an abundant number, since it is smaller than the sum of its proper divisors (1129740).

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

720108 is a wasteful number, since it uses less digits than its factorization.

720108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 18.

The square root of 720108 is about 848.5917746479. The cubic root of 720108 is about 89.6325761118.

It can be divided in two parts, 720 and 108, that added together give a palindrome (828).

The spelling of 720108 in words is "seven hundred twenty thousand, one hundred eight".