798155 has 4 divisors (see below), whose sum is σ = 957792. Its totient is φ = 638520.

The previous prime is 798151. The next prime is 798173. The reversal of 798155 is 551897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551897 = 317 ⋅1741.

It is not a de Polignac number, because 798155 - 2² = 798151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798151) 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, 79811 + ... + 79820.

It is an arithmetic number, because the mean of its divisors is an integer number (239448).

2⁷⁹⁸¹⁵⁵ is an apocalyptic number.

798155 is a deficient number, since it is larger than the sum of its proper divisors (159637).

798155 is a wasteful number, since it uses less digits than its factorization.

798155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159636.

The product of its digits is 12600, while the sum is 35.

The square root of 798155 is about 893.3952092999. The cubic root of 798155 is about 92.7603573121.

The spelling of 798155 in words is "seven hundred ninety-eight thousand, one hundred fifty-five".