498644781 has 8 divisors (see below), whose sum is σ = 666055584. Its totient is φ = 331831920.

The previous prime is 498644779. The next prime is 498644789. The reversal of 498644781 is 187446894.

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

It is not a de Polignac number, because 498644781 - 2¹ = 498644779 is a prime.

It is a super-2 number, since 2×498644781² = 497293235237075922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498644789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147535 + ... + 150876.

It is an arithmetic number, because the mean of its divisors is an integer number (83256948).

Almost surely, 2^498644781 is an apocalyptic number.

It is an amenable number.

498644781 is a deficient number, since it is larger than the sum of its proper divisors (167410803).

498644781 is a wasteful number, since it uses less digits than its factorization.

498644781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298971.

The product of its digits is 1548288, while the sum is 51.

The square root of 498644781 is about 22330.3555950191. The cubic root of 498644781 is about 792.9827851069.

It can be divided in two parts, 49864 and 4781, that added together give a palindrome (54645).

The spelling of 498644781 in words is "four hundred ninety-eight million, six hundred forty-four thousand, seven hundred eighty-one".