798181 has 4 divisors (see below), whose sum is σ = 800172. Its totient is φ = 796192.

The previous prime is 798179. The next prime is 798191. The reversal of 798181 is 181897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 181897 = 59 ⋅3083.

It can be written as a sum of positive squares in 2 ways, for example, as 349281 + 448900 = 591^2 + 670^2 .

It is a cyclic number.

It is not a de Polignac number, because 798181 - 2¹ = 798179 is a prime.

It is a super-2 number, since 2×798181² = 1274185817522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160 + ... + 1273.

It is an arithmetic number, because the mean of its divisors is an integer number (200043).

2⁷⁹⁸¹⁸¹ is an apocalyptic number.

It is an amenable number.

798181 is a deficient number, since it is larger than the sum of its proper divisors (1991).

798181 is a wasteful number, since it uses less digits than its factorization.

798181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its digits is 4032, while the sum is 34.

The square root of 798181 is about 893.4097604123. The cubic root of 798181 is about 92.7613645280.

It can be divided in two parts, 798 and 181, that added together give a palindrome (979).

The spelling of 798181 in words is "seven hundred ninety-eight thousand, one hundred eighty-one".