720870103 has 4 divisors (see below), whose sum is σ = 737634568. Its totient is φ = 704105640.

The previous prime is 720870097. The next prime is 720870121. The reversal of 720870103 is 301078027.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301078027 = 23 ⋅13090349.

It is a cyclic number.

It is not a de Polignac number, because 720870103 - 2²⁹ = 183999191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720870503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8382168 + ... + 8382253.

It is an arithmetic number, because the mean of its divisors is an integer number (184408642).

Almost surely, 2^720870103 is an apocalyptic number.

720870103 is a deficient number, since it is larger than the sum of its proper divisors (16764465).

720870103 is a wasteful number, since it uses less digits than its factorization.

720870103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16764464.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 720870103 is about 26849.0242467022. The cubic root of 720870103 is about 896.6418487593.

The spelling of 720870103 in words is "seven hundred twenty million, eight hundred seventy thousand, one hundred three".