720791111 has 8 divisors (see below), whose sum is σ = 740743584. Its totient is φ = 700951680.

The previous prime is 720791059. The next prime is 720791119. The reversal of 720791111 is 111197027.

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 720791111 - 2¹⁴ = 720774727 is a prime.

It is a super-2 number, since 2×720791111² = 1039079651393228642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720791119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15251 + ... + 40916.

It is an arithmetic number, because the mean of its divisors is an integer number (92592948).

Almost surely, 2^720791111 is an apocalyptic number.

720791111 is a deficient number, since it is larger than the sum of its proper divisors (19952473).

720791111 is a wasteful number, since it uses less digits than its factorization.

720791111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56521.

The product of its (nonzero) digits is 882, while the sum is 29.

The square root of 720791111 is about 26847.5531659777. The cubic root of 720791111 is about 896.6090966172.

The spelling of 720791111 in words is "seven hundred twenty million, seven hundred ninety-one thousand, one hundred eleven".