797940 has 144 divisors (see below), whose sum is σ = 2935296. Its totient is φ = 172800.

The previous prime is 797933. The next prime is 797947. The reversal of 797940 is 49797.

797940 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 (797933) and next prime (797947).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 797895 and 797904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25725 + ... + 25755.

It is an arithmetic number, because the mean of its divisors is an integer number (20384).

2⁷⁹⁷⁹⁴⁰ 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 797940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1467648).

797940 is an abundant number, since it is smaller than the sum of its proper divisors (2137356).

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

797940 is a wasteful number, since it uses less digits than its factorization.

797940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 797940 is about 893.2748737091. The cubic root of 797940 is about 92.7520275734.

The spelling of 797940 in words is "seven hundred ninety-seven thousand, nine hundred forty".