499680 has 72 divisors (see below), whose sum is σ = 1710072. Its totient is φ = 132864.

The previous prime is 499679. The next prime is 499687. The reversal of 499680 is 86994.

499680 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1267 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (23751).

499680 is a Friedman number, since it can be written as 6940*9*8, using all its digits and the basic arithmetic operations.

2⁴⁹⁹⁶⁸⁰ is an apocalyptic number.

499680 is a gapful number since it is divisible by the number (40) 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 499680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855036).

499680 is an abundant number, since it is smaller than the sum of its proper divisors (1210392).

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

499680 is a wasteful number, since it uses less digits than its factorization.

499680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 499680 is about 706.8804708011. The cubic root of 499680 is about 79.3531167070.

Subtracting from 499680 its reverse (86994), we obtain a triangular number (412686 = T₉₀₈).

The spelling of 499680 in words is "four hundred ninety-nine thousand, six hundred eighty".