499731660 has 96 divisors (see below), whose sum is σ = 1646205120. Its totient is φ = 125420544.

The previous prime is 499731613. The next prime is 499731667. The reversal of 499731660 is 66137994.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (499731667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18039 + ... + 36398.

It is an arithmetic number, because the mean of its divisors is an integer number (17147970).

Almost surely, 2^499731660 is an apocalyptic number.

It is an amenable number.

499731660 is an abundant number, since it is smaller than the sum of its proper divisors (1146473460).

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

499731660 is a wasteful number, since it uses less digits than its factorization.

499731660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54472 (or 54464 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 499731660 is about 22354.6787049154. The cubic root of 499731660 is about 793.5585128431.

The spelling of 499731660 in words is "four hundred ninety-nine million, seven hundred thirty-one thousand, six hundred sixty".