720029 has 4 divisors (see below), whose sum is σ = 727260. Its totient is φ = 712800.

The previous prime is 720023. The next prime is 720053. The reversal of 720029 is 920027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 920027 = 53 ⋅17359.

It can be written as a sum of positive squares in 2 ways, for example, as 597529 + 122500 = 773^2 + 350^2 .

It is a cyclic number.

It is not a de Polignac number, because 720029 - 2⁸ = 719773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 720029.

It is not an unprimeable number, because it can be changed into a prime (720023) 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, 3464 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (181815).

2⁷²⁰⁰²⁹ is an apocalyptic number.

It is an amenable number.

720029 is a deficient number, since it is larger than the sum of its proper divisors (7231).

720029 is a wasteful number, since it uses less digits than its factorization.

720029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 720029 is about 848.5452256657. The cubic root of 720029 is about 89.6292982552.

The spelling of 720029 in words is "seven hundred twenty thousand, twenty-nine".