720040071 has 8 divisors (see below), whose sum is σ = 976325760. Its totient is φ = 471890552.

The previous prime is 720040067. The next prime is 720040109. The reversal of 720040071 is 170040027.

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 720040071 - 2² = 720040067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720040051) 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, 2033835 + ... + 2034188.

It is an arithmetic number, because the mean of its divisors is an integer number (122040720).

Almost surely, 2^720040071 is an apocalyptic number.

720040071 is a deficient number, since it is larger than the sum of its proper divisors (256285689).

720040071 is a wasteful number, since it uses less digits than its factorization.

720040071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068085.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 720040071 is about 26833.5623986082. The cubic root of 720040071 is about 896.2975762594.

Adding to 720040071 its reverse (170040027), we get a palindrome (890080098).

The spelling of 720040071 in words is "seven hundred twenty million, forty thousand, seventy-one".