498218666 has 32 divisors (see below), whose sum is σ = 846806400. Its totient is φ = 217766080.

The previous prime is 498218647. The next prime is 498218671. The reversal of 498218666 is 666812894.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170171 + ... + 173073.

It is an arithmetic number, because the mean of its divisors is an integer number (26462700).

Almost surely, 2^498218666 is an apocalyptic number.

498218666 is a deficient number, since it is larger than the sum of its proper divisors (348587734).

498218666 is a wasteful number, since it uses less digits than its factorization.

498218666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214.

The product of its digits is 995328, while the sum is 50.

The square root of 498218666 is about 22320.8123956096. The cubic root of 498218666 is about 792.7568405942.

The spelling of 498218666 in words is "four hundred ninety-eight million, two hundred eighteen thousand, six hundred sixty-six".