797646720 has 128 divisors (see below), whose sum is σ = 2738161440. Its totient is φ = 196337664.

The previous prime is 797646719. The next prime is 797646721. The reversal of 797646720 is 27646797.

It is a happy number.

797646720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (797646719) and next prime (797646721).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 797646720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797646721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8982 + ... + 40938.

Almost surely, 2^797646720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797646720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1369080720).

797646720 is an abundant number, since it is smaller than the sum of its proper divisors (1940514720).

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

797646720 is a wasteful number, since it uses less digits than its factorization.

797646720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31992 (or 31980 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 48.

The square root of 797646720 is about 28242.6401032198. The cubic root of 797646720 is about 927.4066262199.

The spelling of 797646720 in words is "seven hundred ninety-seven million, six hundred forty-six thousand, seven hundred twenty".