499660673 has 4 divisors (see below), whose sum is σ = 499879380. Its totient is φ = 499441968.

The previous prime is 499660669. The next prime is 499660709. The reversal of 499660673 is 376066994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 376066994 = 2 ⋅188033497.

It can be written as a sum of positive squares in 2 ways, for example, as 402283249 + 97377424 = 20057^2 + 9868^2 .

It is a cyclic number.

It is not a de Polignac number, because 499660673 - 2² = 499660669 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499669673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105890 + ... + 110507.

It is an arithmetic number, because the mean of its divisors is an integer number (124969845).

Almost surely, 2^499660673 is an apocalyptic number.

It is an amenable number.

499660673 is a deficient number, since it is larger than the sum of its proper divisors (218707).

499660673 is a wasteful number, since it uses less digits than its factorization.

499660673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218706.

The product of its (nonzero) digits is 1469664, while the sum is 50.

The square root of 499660673 is about 22353.0909048391. The cubic root of 499660673 is about 793.5209360059.

The spelling of 499660673 in words is "four hundred ninety-nine million, six hundred sixty thousand, six hundred seventy-three".