499664 has 40 divisors (see below), whose sum is σ = 1124928. Its totient is φ = 212480.

The previous prime is 499663. The next prime is 499669. The reversal of 499664 is 466994.

499664 is nontrivially palindromic in base 7.

499664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×499664² = 499328225792, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 499664.

It is not an unprimeable number, because it can be changed into a prime (499661) 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, 2909 + ... + 3075.

2⁴⁹⁹⁶⁶⁴ is an apocalyptic number.

499664 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 499664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562464).

499664 is an abundant number, since it is smaller than the sum of its proper divisors (625264).

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

499664 is a wasteful number, since it uses less digits than its factorization.

499664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 197 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 499664 is about 706.8691533799. The cubic root of 499664 is about 79.3522697227.

The spelling of 499664 in words is "four hundred ninety-nine thousand, six hundred sixty-four".