720885760647 has 8 divisors (see below), whose sum is σ = 1035118015344. Its totient is φ = 443622006528.

The previous prime is 720885760643. The next prime is 720885760717. The reversal of 720885760647 is 746067588027.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 720885760647 - 2² = 720885760643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720885760643) 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 7 ways as a sum of consecutive naturals, for example, 9242125098 + ... + 9242125175.

It is an arithmetic number, because the mean of its divisors is an integer number (129389751918).

Almost surely, 2^720885760647 is an apocalyptic number.

720885760647 is a deficient number, since it is larger than the sum of its proper divisors (314232254697).

720885760647 is a wasteful number, since it uses less digits than its factorization.

720885760647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18484250289.

The product of its (nonzero) digits is 31610880, while the sum is 60.

The spelling of 720885760647 in words is "seven hundred twenty billion, eight hundred eighty-five million, seven hundred sixty thousand, six hundred forty-seven".