720198 has 16 divisors (see below), whose sum is σ = 1600560. Its totient is φ = 240048.

The previous prime is 720197. The next prime is 720211. The reversal of 720198 is 891027.

It is a Harshad number since it is a multiple of its sum of digits (27).

720198 is a modest number, since divided by 198 gives 72 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6615 + ... + 6722.

It is an arithmetic number, because the mean of its divisors is an integer number (100035).

2⁷²⁰¹⁹⁸ is an apocalyptic number.

720198 is an abundant number, since it is smaller than the sum of its proper divisors (880362).

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

720198 is a wasteful number, since it uses less digits than its factorization.

720198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13348 (or 13342 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 720198 is about 848.6448020226. The cubic root of 720198 is about 89.6363100868.

It can be divided in two parts, 72019 and 8, that added together give a palindrome (72027).

The spelling of 720198 in words is "seven hundred twenty thousand, one hundred ninety-eight".