720827113 has 4 divisors (see below), whose sum is σ = 727206228. Its totient is φ = 714448000.

The previous prime is 720827089. The next prime is 720827119. The reversal of 720827113 is 311728027.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115519504 + 605307609 = 10748^2 + 24603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720827113 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720827119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3189388 + ... + 3189613.

It is an arithmetic number, because the mean of its divisors is an integer number (181801557).

Almost surely, 2^720827113 is an apocalyptic number.

It is an amenable number.

720827113 is a deficient number, since it is larger than the sum of its proper divisors (6379115).

720827113 is a wasteful number, since it uses less digits than its factorization.

720827113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6379114.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 720827113 is about 26848.2236470125. The cubic root of 720827113 is about 896.6240242816.

The spelling of 720827113 in words is "seven hundred twenty million, eight hundred twenty-seven thousand, one hundred thirteen".