720501106 has 16 divisors (see below), whose sum is σ = 1232351064. Its totient is φ = 312977664.

The previous prime is 720501083. The next prime is 720501107. The reversal of 720501106 is 601105027.

It can be written as a sum of positive squares in 4 ways, for example, as 457574881 + 262926225 = 21391^2 + 16215^2 .

It is not an unprimeable number, because it can be changed into a prime (720501107) 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, 814605 + ... + 815488.

Almost surely, 2^720501106 is an apocalyptic number.

720501106 is a deficient number, since it is larger than the sum of its proper divisors (511849958).

720501106 is a wasteful number, since it uses less digits than its factorization.

720501106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630125.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 720501106 is about 26842.1516648722. The cubic root of 720501106 is about 896.4888324624.

The spelling of 720501106 in words is "seven hundred twenty million, five hundred one thousand, one hundred six".