720162 has 12 divisors (see below), whose sum is σ = 1560390. Its totient is φ = 240048.

The previous prime is 720151. The next prime is 720173. The reversal of 720162 is 261027.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (720151) and next prime (720173).

It can be written as a sum of positive squares in only one way, i.e., 370881 + 349281 = 609^2 + 591^2 .

It is a hoax number, since the sum of its digits (18) 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 (18), and also a Moran number because the ratio is a prime number: 40009 = 720162 / (7 + 2 + 0 + 1 + 6 + 2).

720162 is a modest number, since divided by 162 gives 72 as remainder.

It is an unprimeable number.

720162 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 5 ways as a sum of consecutive naturals, for example, 19987 + ... + 20022.

2⁷²⁰¹⁶² is an apocalyptic number.

720162 is an abundant number, since it is smaller than the sum of its proper divisors (840228).

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

720162 is a wasteful number, since it uses less digits than its factorization.

720162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40017 (or 40014 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 720162 is about 848.6235914703. The cubic root of 720162 is about 89.6348165342.

Adding to 720162 its reverse (261027), we get a palindrome (981189).

The spelling of 720162 in words is "seven hundred twenty thousand, one hundred sixty-two".