499647564 has 72 divisors (see below), whose sum is σ = 1362986352. Its totient is φ = 153417600.

The previous prime is 499647563. The next prime is 499647581. The reversal of 499647564 is 465746994.

It is a happy number.

It is a super-2 number, since 2×499647564² = 499295376422268192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 499647564.

It is not an unprimeable number, because it can be changed into a prime (499647563) 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 23 ways as a sum of consecutive naturals, for example, 327307 + ... + 328829.

It is an arithmetic number, because the mean of its divisors is an integer number (18930366).

Almost surely, 2^499647564 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 499647564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (681493176).

499647564 is an abundant number, since it is smaller than the sum of its proper divisors (863338788).

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

499647564 is a wasteful number, since it uses less digits than its factorization.

499647564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247 (or 2242 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The square root of 499647564 is about 22352.7976772484. The cubic root of 499647564 is about 793.5139963917.

The spelling of 499647564 in words is "four hundred ninety-nine million, six hundred forty-seven thousand, five hundred sixty-four".