720020163 has 8 divisors (see below), whose sum is σ = 961632000. Its totient is φ = 479210888.

The previous prime is 720020153. The next prime is 720020173. The reversal of 720020163 is 361020027.

It is a happy number.

720020163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (720020153) and next prime (720020173).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 720020163 - 2¹² = 720016067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (720020113) 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, 198543 + ... + 202136.

It is an arithmetic number, because the mean of its divisors is an integer number (120204000).

Almost surely, 2^720020163 is an apocalyptic number.

720020163 is a deficient number, since it is larger than the sum of its proper divisors (241611837).

720020163 is a wasteful number, since it uses less digits than its factorization.

720020163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401281.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 720020163 is about 26833.1914426890. The cubic root of 720020163 is about 896.2893157670.

The spelling of 720020163 in words is "seven hundred twenty million, twenty thousand, one hundred sixty-three".