720711066 has 32 divisors (see below), whose sum is σ = 1499897088. Its totient is φ = 230684480.

The previous prime is 720711037. The next prime is 720711091. The reversal of 720711066 is 660117027.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9165 + ... + 39056.

It is an arithmetic number, because the mean of its divisors is an integer number (46871784).

Almost surely, 2^720711066 is an apocalyptic number.

720711066 is an abundant number, since it is smaller than the sum of its proper divisors (779186022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720711066 is a wasteful number, since it uses less digits than its factorization.

720711066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48326.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 720711066 is about 26846.0623928352. The cubic root of 720711066 is about 896.5759054328.

It can be divided in two parts, 72071 and 1066, that added together give a palindrome (73137).

The spelling of 720711066 in words is "seven hundred twenty million, seven hundred eleven thousand, sixty-six".