498865 has 8 divisors (see below), whose sum is σ = 633960. Its totient is φ = 375552.

The previous prime is 498859. The next prime is 498881. The reversal of 498865 is 568894.

It can be written as a sum of positive squares in 4 ways, for example, as 26896 + 471969 = 164^2 + 687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 498865 - 2³ = 498857 is a prime.

498865 is a lucky number.

It is a zygodrome in base 3.

It is an unprimeable number.

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, 2850 + ... + 3019.

It is an arithmetic number, because the mean of its divisors is an integer number (79245).

2⁴⁹⁸⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

498865 is a deficient number, since it is larger than the sum of its proper divisors (135095).

498865 is a wasteful number, since it uses less digits than its factorization.

498865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5891.

The product of its digits is 69120, while the sum is 40.

The square root of 498865 is about 706.3037590159. The cubic root of 498865 is about 79.3099504250.

The spelling of 498865 in words is "four hundred ninety-eight thousand, eight hundred sixty-five".