498666820 has 48 divisors (see below), whose sum is σ = 1069588800. Its totient is φ = 195232640.

The previous prime is 498666787. The next prime is 498666821. The reversal of 498666820 is 28666894.

It is not an unprimeable number, because it can be changed into a prime (498666821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316635 + ... + 318205.

It is an arithmetic number, because the mean of its divisors is an integer number (22283100).

Almost surely, 2^498666820 is an apocalyptic number.

It is an amenable number.

498666820 is an abundant number, since it is smaller than the sum of its proper divisors (570921980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

498666820 is a wasteful number, since it uses less digits than its factorization.

498666820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The square root of 498666820 is about 22330.8490658103. The cubic root of 498666820 is about 792.9944676317.

The spelling of 498666820 in words is "four hundred ninety-eight million, six hundred sixty-six thousand, eight hundred twenty".