497799820 has 72 divisors (see below), whose sum is σ = 1244439504. Its totient is φ = 166690944.

The previous prime is 497799817. The next prime is 497799821. The reversal of 497799820 is 28997794.

It is not an unprimeable number, because it can be changed into a prime (497799821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36234 + ... + 48046.

It is an arithmetic number, because the mean of its divisors is an integer number (17283882).

Almost surely, 2^497799820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 497799820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (622219752).

497799820 is an abundant number, since it is smaller than the sum of its proper divisors (746639684).

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

497799820 is a wasteful number, since it uses less digits than its factorization.

497799820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11879 (or 11870 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 497799820 is about 22311.4280134643. The cubic root of 497799820 is about 792.5346248310.

The spelling of 497799820 in words is "four hundred ninety-seven million, seven hundred ninety-nine thousand, eight hundred twenty".