499806664 has 96 divisors (see below), whose sum is σ = 1163484000. Its totient is φ = 199997952.

The previous prime is 499806653. The next prime is 499806679. The reversal of 499806664 is 466608994.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1192647 + ... + 1193065.

It is an arithmetic number, because the mean of its divisors is an integer number (12119625).

Almost surely, 2^499806664 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 499806664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581742000).

499806664 is an abundant number, since it is smaller than the sum of its proper divisors (663677336).

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

499806664 is a wasteful number, since it uses less digits than its factorization.

499806664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 52.

The square root of 499806664 is about 22356.3562326243. The cubic root of 499806664 is about 793.5982122057.

It can be divided in two parts, 49980 and 6664, that added together give a square (56644 = 238²).

The spelling of 499806664 in words is "four hundred ninety-nine million, eight hundred six thousand, six hundred sixty-four".