498778 has 16 divisors (see below), whose sum is σ = 892800. Its totient is φ = 204336.

The previous prime is 498767. The next prime is 498779. The reversal of 498778 is 877894.

498778 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (498779) 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 7 ways as a sum of consecutive naturals, for example, 453 + ... + 1096.

It is an arithmetic number, because the mean of its divisors is an integer number (55800).

2⁴⁹⁸⁷⁷⁸ is an apocalyptic number.

498778 is a deficient number, since it is larger than the sum of its proper divisors (394022).

498778 is a wasteful number, since it uses less digits than its factorization.

498778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581.

The product of its digits is 112896, while the sum is 43.

The square root of 498778 is about 706.2421680982. The cubic root of 498778 is about 79.3053397141.

The spelling of 498778 in words is "four hundred ninety-eight thousand, seven hundred seventy-eight".