499783680 has 576 divisors, whose sum is σ = 2069776800. Its totient is φ = 110100480.

The previous prime is 499783633. The next prime is 499783717. The reversal of 499783680 is 86387994.

499783680 is a `hidden beast` number, since 499 + 78 + 3 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17233906 + ... + 17233934.

Almost surely, 2^499783680 is an apocalyptic number.

499783680 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 499783680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1034888400).

499783680 is an abundant number, since it is smaller than the sum of its proper divisors (1569993120).

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

499783680 is a wasteful number, since it uses less digits than its factorization.

499783680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 499783680 is about 22355.8421894591. The cubic root of 499783680 is about 793.5860472746.

The spelling of 499783680 in words is "four hundred ninety-nine million, seven hundred eighty-three thousand, six hundred eighty".