797720 has 96 divisors (see below), whose sum is σ = 2339280. Its totient is φ = 241920.

The previous prime is 797711. The next prime is 797729. The reversal of 797720 is 27797.

797720 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (797711) and next prime (797729).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797729) by changing a digit.

797720 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21542 + ... + 21578.

2⁷⁹⁷⁷²⁰ is an apocalyptic number.

797720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169640).

797720 is an abundant number, since it is smaller than the sum of its proper divisors (1541560).

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

797720 is a wasteful number, since it uses less digits than its factorization.

797720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 32.

The square root of 797720 is about 893.1517228332. The cubic root of 797720 is about 92.7435025708.

It can be divided in two parts, 7977 and 20, that added together give a palindrome (7997).

The spelling of 797720 in words is "seven hundred ninety-seven thousand, seven hundred twenty".