720071711 has 4 divisors (see below), whose sum is σ = 744901800. Its totient is φ = 695241624.

The previous prime is 720071707. The next prime is 720071717. The reversal of 720071711 is 117170027.

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 720071711 - 2² = 720071707 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 (720071717) 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, 12415001 + ... + 12415058.

It is an arithmetic number, because the mean of its divisors is an integer number (186225450).

Almost surely, 2^720071711 is an apocalyptic number.

720071711 is a deficient number, since it is larger than the sum of its proper divisors (24830089).

720071711 is a wasteful number, since it uses less digits than its factorization.

720071711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24830088.

The product of its (nonzero) digits is 686, while the sum is 26.

The square root of 720071711 is about 26834.1519523163. The cubic root of 720071711 is about 896.3107044362.

The spelling of 720071711 in words is "seven hundred twenty million, seventy-one thousand, seven hundred eleven".