720735103 has 4 divisors (see below), whose sum is σ = 786256488. Its totient is φ = 655213720.

The previous prime is 720735101. The next prime is 720735121. The reversal of 720735103 is 301537027.

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 720735103 - 2¹ = 720735101 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 (720735101) 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, 32760676 + ... + 32760697.

It is an arithmetic number, because the mean of its divisors is an integer number (196564122).

Almost surely, 2^720735103 is an apocalyptic number.

720735103 is a deficient number, since it is larger than the sum of its proper divisors (65521385).

720735103 is a wasteful number, since it uses less digits than its factorization.

720735103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65521384.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 720735103 is about 26846.5100711433. The cubic root of 720735103 is about 896.5858727908.

The spelling of 720735103 in words is "seven hundred twenty million, seven hundred thirty-five thousand, one hundred three".