720808027 has 4 divisors (see below), whose sum is σ = 736144416. Its totient is φ = 705471640.

The previous prime is 720808019. The next prime is 720808091.

720808027 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 720808027 - 2³ = 720808019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 720807983 and 720808001.

It is not an unprimeable number, because it can be changed into a prime (720808727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7668124 + ... + 7668217.

It is an arithmetic number, because the mean of its divisors is an integer number (184036104).

Almost surely, 2^720808027 is an apocalyptic number.

720808027 is a deficient number, since it is larger than the sum of its proper divisors (15336389).

720808027 is a wasteful number, since it uses less digits than its factorization.

720808027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336388.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 720808027 is about 26847.8682021497. The cubic root of 720808027 is about 896.6161106331.

The spelling of 720808027 in words is "seven hundred twenty million, eight hundred eight thousand, twenty-seven".