798145 has 4 divisors (see below), whose sum is σ = 957780. Its totient is φ = 638512.

The previous prime is 798143. The next prime is 798151. The reversal of 798145 is 541897.

798145 = 278² + 279² + ... + 287².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541897 = 41 ⋅13217.

It can be written as a sum of positive squares in 2 ways, for example, as 579121 + 219024 = 761^2 + 468^2 .

It is a cyclic number.

It is not a de Polignac number, because 798145 - 2¹ = 798143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 798145.

It is not an unprimeable number, because it can be changed into a prime (798143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79810 + ... + 79819.

It is an arithmetic number, because the mean of its divisors is an integer number (239445).

2⁷⁹⁸¹⁴⁵ is an apocalyptic number.

It is an amenable number.

798145 is a deficient number, since it is larger than the sum of its proper divisors (159635).

798145 is a wasteful number, since it uses less digits than its factorization.

798145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159634.

The product of its digits is 10080, while the sum is 34.

The square root of 798145 is about 893.3896126551. The cubic root of 798145 is about 92.7599699156.

The spelling of 798145 in words is "seven hundred ninety-eight thousand, one hundred forty-five".